geometry-and-trigonometry

[charred spear]

1.12327635

[restive void]

woah where did we get the 25

[upper karma]

typo

[restive void]

okay good lol

i got really scared

[charred spear]

1.24049897

71.07535558

[crude kraken]

Aquiver when you're finished with the homework I can show you why sohcahtoa is a thing

[restive void]

is that the < measure?

[upper karma]

yeah

[restive void]

why 180/pi?

like

cuz 180 is half 360 and pi is whats used to find circles or whatever

we havent done circles

only triangles

triangles are boring :(

yesyesyes

i see

[crude kraken]

https://upload.wikimedia.org/wikipedia/commons/4/4e/Circle_radians.gif

[upper karma]

fun

[crude kraken]

So there's 2pi radians in a circle and 360 degrees in a circle

we want a way to convert from radians to degrees

We just multiply the radians by 360/2pi

which is 180/pi

[upper karma]

holy shit

[restive void]

aaaaaaaaaaaaaaaaaaa

math

is weird

[upper karma]

I just realized why its called arctan

[restive void]

so interesting

[crude kraken]

Math is awesome

[restive void]

but so weird

[upper karma]

its the length of the arc for the tangent

[crude kraken]

https://www.maa.org/external_archive/devlin/LockhartsLament.pdf if you ever get the time, this book changed my life

[upper karma]

gilderoy lockheart?

[restive void]

sin = soh?

[crude kraken]

@upper karma everything makes sense

SohCahToa : Sin (opposite/hypotenuse), Cosine (adjascent/hypotenuse), Tangent (opposite/adjascent)

[restive void]

dude even i could see that lol

biology makes things so much easier

meiosis one meiosis two

[crude kraken]

i can make a fancier format for you

:0

[restive void]

literally what theyre called

[crude kraken]

=tex \sin(x)=\frac{\text{Opposite}}{\text{Hypotenuse}}

[upper karma]

$$\sin(\theta)=\frac{\text{Opp}}{\text{Hyp}}$$

[restive void]

symbols

letters

charecters

[crude kraken]

^

[upper karma]

@crude kraken u beat me to it

[restive void]

why a zero

[upper karma]

thats theta

[restive void]

in sin(_)

[crude kraken]

Theta

[upper karma]

θ

[restive void]

wha t

the

f uck

[crude kraken]

It's a symbol generally used to represent angles

just convention

but I mean, you saw me use sin(x), it doesn't really matter

hell, I'd be fine with $$\sin(\int)$$

[restive void]

AAAAAAAAAAAAAA

[restive void]

TOO MANY SYMBOPLSSS FOAJSDKL;F

[upper karma]

blasphemy

[crude kraken]

okay maybe that's a little too hard

^

[upper karma]

its still an integral

🤢

[crude kraken]

@restive void draw a circle with a radius of one and plot the center point

=tex \sin\left(\int \sin(x)dx\right)

[restive void]

uh

no thanks smile

what is cos again

cah?

[crude kraken]

:<

[runic jackal]

smile

[crude kraken]

^

😄

cah

[restive void]

27/45 for x?

[restive void]

so im assuming in cos the adjacent angle cant be the hypot

[upper karma]

adj is never hyp

[restive void]

oh

okay

help

what do you do with radicals

[upper karma]

what is the function

[restive void]

cos

[crude kraken]

Of

[upper karma]

of what angle

[restive void]

x/y

x and y

[crude kraken]

Mk

Cos is cah, so for x this is just 13/26 or .5

for y this is 13sqrt(3)/26

or sqrt(3)/2

[upper karma]

cos(x)=13/26=1/2

[restive void]

so do i just leave it like that?

nothing else?

[upper karma]

well it should be in the numerator

but yeah

[restive void]

yes okay

thanks

[upper karma]

mhm

[keen aspen]

@restive void Geometry Dash? Lmao

[restive void]

@keen aspen sir

how did you know

[keen aspen]

Hahahaha

Wow

[restive void]

sir

[keen aspen]

Funny seeing you here

[restive void]

explain who you are

[keen aspen]

Your know Cemplix?

[restive void]

do you know me from renevant?

uh

yessir

[keen aspen]

Yeah

We used to be in calls lol

And yes I do

[copper valve]

:0

[keen aspen]

Small world lolol

Jk that was a rare encounter

[copper valve]

actually a couple people recognized me from osu! on here...

;o

[keen aspen]

Wow really

[copper valve]

ya

like, "are u woog on osu"

XD

[keen aspen]

You are popular in osu taiko community?

Hahaha

Are you in the discord server? For taiko community

[copper valve]

i didn't think so but maybe

no

[keen aspen]

Oh ok

You know vlady?

[copper valve]

vladyushko?

[keen aspen]

Yep

He is #1 Canadian

I think

Unless it changes

[copper valve]

I haven't talked to them, i just know he's top canadian, not sure but top 3 def :p

[keen aspen]

Ahh lol

What about the top Japanese players

Like yu68 and asuasu

[copper valve]

they mostly speak japanese :P

(to be expected)

I've never played with yu68 tho

[keen aspen]

Oh he is really good

[copper valve]

yeah ik

i don't think he plays multi tho

[keen aspen]

Watching his cam videos are crazy

[copper valve]

i guess people may recognize me if we played multi together a lot

[keen aspen]

I've only been in a lobby with yu once

He gets on at like 4 my time

[copper valve]

i remember being in a game that was super out of my league haha

like 10 ppl, all others from japan

and all in the top 100 👀

spooky but cool

fail every map

[keen aspen]

Hahaha

[copper valve]

sightreading 8* 🙅

[keen aspen]

Yeah crazy stuff like I remember in a lobby with top players and for example they played uhhh

Gypsy tronic DT and it was omg

[waxen gorge]

Sight-reading grade 8 pieces is probably harder

:p

[copper valve]

Xd

i cant read dt at all tbh

[keen aspen]

As in musical instrument @waxen gorge ?

[waxen gorge]

More specifically, violin

[keen aspen]

For solo ensemble?

[waxen gorge]

Don't do solo ensemble

For auditions

[keen aspen]

Ah

[waxen gorge]

And stuff

I wanted to

[keen aspen]

What grade you doing?

[waxen gorge]

But didn't have time so didn't do it

pieces?

[keen aspen]

Yep

[waxen gorge]

Well I finished la follia/rigaudon and stuff and I wanted to do praeleddium but I'm doing Mozart concerto no. 3

.-.

So

La follia is grade 6

so idk

Is it?

It's Suzuki book 6

[keen aspen]

Oh nice nice

[waxen gorge]

But I've only been playing for 2.5 yrs

Sooo

Well technically 3

[keen aspen]

I've heard of Mozarts concerto

[waxen gorge]

I like suck at sight reading

[keen aspen]

I'll soon be playing grade 6s but not yet

[waxen gorge]

I had an allstate audition

[keen aspen]

Apparently grade 5-6 is a big jump

[waxen gorge]

and I did the excerpts perfect

And then flunked the sight reading

So I got alternate :(

[keen aspen]

what grade?

4?

[waxen gorge]

Middle school allstate

[keen aspen]

You're in middle school?

[waxen gorge]

Ya 8th grade

[keen aspen]

Wtf and you are playing grade 6 already

[waxen gorge]

...

[keen aspen]

He is in Asia?

Oh haha

My 8th grade year I played a grade 3

[waxen gorge]

O I'm asian but not..
Asian asian

Like

Close to middle East asian

[keen aspen]

My senior year I'll do a grade 6 but thats the highest Ill go

[waxen gorge]

But not middle East asian

Like super white asian :o

[keen aspen]

So India? Lol

[waxen gorge]

No

Pakistani

[keen aspen]

Ah

[waxen gorge]

Indian is brown...

(no racism intended)

I'm deathly white pale

[keen aspen]

The grades for music is graded 1-7 or 8

[waxen gorge]

Like I barely go outside xD

[keen aspen]

When doing for auditions or solo ensemble

So bleh is already up there as an 8th grader

[waxen gorge]

Wait omg

One more grade

Till Vitale chaccone

:o

I can't wait

Ur probably mixing it up with bach's

O

It sounds so gud

.-.

[keen aspen]

Flight of the Bumblebee is overrated

Not that hard

Idk what its like for strings

But for Trombone its not hard to double tongue and move the slide haha

[waxen gorge]

O just realized I practically skipped grade 4

[keen aspen]

Yep

[waxen gorge]

But with wind instruments don't u need circular breathing

[keen aspen]

So you are Pakistani?

Do you live in Pakistan?

[waxen gorge]

No in georgia

In us

[keen aspen]

Ahhh I am right below

[waxen gorge]

Fl?

Wait... Winter is... Grade 6...

.........

[keen aspen]

For FotB you don't need to circular breath

Yeah florida

Plus I can't do it

[waxen gorge]

Fotb?

[keen aspen]

You can't practice circular breathing for more than about 5 minutes or you will pass out

Flight of the bumble

Bee

[waxen gorge]

O

[keen aspen]

Wait bleh

Are you going to the Troy honour band?

In Florida we have an anual thing where people are nominated to go to Troy and do band stuff for like 3 days

Annual*

[waxen gorge]

What I'm in orch tho

confuzzled

[keen aspen]

It doesn't apply?

[waxen gorge]

We have an honor orchestra...

[keen aspen]

I would assume they have an orchestra category

[waxen gorge]

it's district tho

So it's rly easy

[keen aspen]

Oh ok

[waxen gorge]

It's like grade 2-3

[keen aspen]

Haha

That's how our sight reading is

[waxen gorge]

Last yr I got 2nd violin 1st chair (5th best) but prob gonna do worse this yr

Cuz allstate is right before honor orch and I spent a bunch of time on that

But honor orch was delayed so audition is in two more weeks

[restive void]

@copper valve I KNEW I RECOGNIZED YOUR NAME

I JUST WASNT SURE

[copper valve]

wha

[keen aspen]

You play osu as well?

[restive void]

yep

[keen aspen]

Lol

[restive void]

not that good

[keen aspen]

Taiko?

[restive void]

but i kn ew i recognized the name

nah

i just seen his name around

[keen aspen]

Oh standard?

[restive void]

yessir

[waxen gorge]

Lol recognizing everyone

[keen aspen]

Ahh haha

[copper valve]

i am so popular :0

[waxen gorge]

xD

[restive void]

https://www.youtube.com/channel/UCiI9dJkH0OAx6SAmRdg-_2g?view_as=subscriber

fuck

well

shameless advertising

:)

[copper valve]

XD

[waxen gorge]

should I sub.. hm

[keen aspen]

Btw what ever happened to renevant?

[restive void]

i started hating gd

[keen aspen]

Yes he posts quality content

[restive void]

i quit for 5 weeks about

[keen aspen]

Oh ok

[waxen gorge]

Ooh u play csgo~

[restive void]

i was playing dbd, osu, cs

yea

[keen aspen]

Did you see that Rafis is new #1?

[waxen gorge]

What rank r u

[restive void]

nearly gn2

win streak rn

as gn1

so soon enough

[waxen gorge]

o I used to be gn3 then quit and stupid mm system put me in s2

[copper valve]

ya i saw!

[waxen gorge]

I mostly play community servers tho

[keen aspen]

Do you still talk with gd people?

[copper valve]

weren't u going to bed @waxen gorge

[keen aspen]

Like Temporum

@restive void

[waxen gorge]

Ya

Too lazy tho

[restive void]

@keen aspen yep

hes one of my best friends

[copper valve]

too lazy to sleep

[waxen gorge]

Lol

[keen aspen]

Oh wow

[waxen gorge]

I barely practiced my Mozart and my rhythm sucked so my violin teacher was like: no..no..no

[copper valve]

gd ~ geometry dash?

[restive void]

yessir

[waxen gorge]

Then he played the accompaniement

[copper valve]

O k

[waxen gorge]

And I realized how bad it was xD

.-.

[keen aspen]

Does Cemplix still play?

I haven't heard from him since his Erebus completion

[thin hound]

http://prntscr.com/i4qnvh

[keen aspen]

Amplitude is the absolute value of a term

So the peak is y=4

Oops forgot the vertical shift

+3

To find the period its 2pi/b so its simply just 2pi as the period

Doesn't look to have a c value so no horizontal shift

So the peak is at y=7 trough is at y=-1

Period is 2pi

And to find the yintercept set x=0 -4cos(0)+3

Giving you (0,-1)

[keen aspen]

Need help with 6, the one starting with "An observer.. "

[keen aspen]

Got that

[dark sparrow]

brb, breakfast

[keen aspen]

👌

[dark sparrow]

just gonna give things names for ease of reference now

AC = x cot(23.5°), BC = x cot(46°)

x cot(23.5°) - x cot(46°) = 100

=tex x = \frac{100}{\cot(23.5^\circ) - \cot(46^\circ)}

[dark sparrow]

@keen aspen

[keen aspen]

ooo I did it different

can I send you my work and you can see if its right?

[dark sparrow]

sure 👀

[keen aspen]

Its way more complex than yours xD

[dark sparrow]

yeah this looks correct

[keen aspen]

Sweet imma remember to do yours though much more simple

[keen aspen]

#11

I have the answer but idk which angle

I thought it was the top angle but apparently its bottom and its confusing me

Unless the triangle is orientated differently

[keen aspen]

Crap ok I did orientate wrong

Thanks again

[dark sparrow]

the verb is orient 😛

[keen aspen]

A Russian teaching an American English lel

[keen aspen]

#20 please

[dark sparrow]

== 50 * tand(75)

[charred spear]

186.60254038

[keen aspen]

So BC is 186.6?

ft

[dark sparrow]

yes

== (186.6025/4) * 1/5280 * 60

[charred spear]

0.53012074

[dark sparrow]

...wait that doesn't make sense hang on

[keen aspen]

31.8mph for reference

[dark sparrow]

== 186.6025/4

[charred spear]

46.650625

[dark sparrow]

this is the train's speed in ft/s

oh yeah

46.6506 ft/s * 1/5280 mi/ft * 3600 s/h

== 46.6506 * 1/5280 * 3600

[charred spear]

31.80722727

[dark sparrow]

there

[keen aspen]

yep thanks! 😄

[west dune]

o/

BE splits <ABC in half
AE splits <BAD in half

I need to proove that <BEA = 90 degree

How to?

[dark sparrow]

is ABCD a parallelogram

[unborn bane]

hm

even if its not a parallelogram, if BC and AD are parallel it could be done

[west dune]

Yes.

If you mean
AB || CD and BC || AD

@dark sparrow @unborn bane

Sorry I haven't mentioned that

[unborn bane]

if you let angle ABC and angle BAD to be x and y

then x and y are supplementary

=tex x+y=180

[unborn bane]

=tex (1/2)x + (1/2)y = 90

[unborn bane]

1/2 of x and 1/2 of y are simply angles EBA and EAB

[west dune]

That's what I did ayy but why = to 90 tho

[unborn bane]

what?

[west dune]

oh I know why

[unborn bane]

k

then there's your answer

the third angle of the triangle must be 90 then

[west dune]

But how to solve? I meanm x = 180 - y

How am I prooving it tho?

[unborn bane]

=tex <EBA + <EAB = 90

[west dune]

I'm pretty sure that ain't enough :/

[unborn bane]

and you know that the sum of the interior angles of a triangle is 180

[dark sparrow]

\angle

[unborn bane]

oh ok

[dark sparrow]

=tex \angle EBA + \angle EAB = 90^\circ

[west dune]

so I need to say that The sum of all the angles in a triangle is 180 degree?

[unborn bane]

yes ofc

[west dune]

How to parallel helps me?

Because the sum of two angles between parallel are equal to 180?

[unborn bane]

uh

[west dune]

I didn't parse it correctly

[unborn bane]

https://www.mathplanet.com/Oldsite/media/39189/line07.png

[west dune]

In parallelogram the sum of 2 angles next to each other are = to 180

[unborn bane]

assuming the two horizontal lines are parallel

angle 8 + angle 3 = 180

[west dune]

Yea, that's what I meant

Thanks.

@unborn bane But I don't know if the third triangle angle must be 90 degrees
I'm pretty sure I'm not allowed to use the thing to prove (That <AEB = 90) to know things.

Anyone else? 😓

[dark sparrow]

can you repost your question?

[west dune]

Yes sure.

ABCD a parallelogram
BE splits <ABC in half
AE splits <BAD in half
I need to proove that <BEA = 90 degree
How to?

@dark sparrow

[west dune]

Yes!

[dark sparrow]

okay

so

=tex \angle BAD + \angle ABC = 180^\circ

[west dune]

Yes I did that one

[dark sparrow]

=tex \angle BAE = \frac{1}{2} \angle BAD; \quad \angle ABE = \frac{1}{2} \angle ABC

[dark sparrow]

is that clear?

[west dune]

Yes

[dark sparrow]

=tex \frac{1}{2}(\angle BAD + \angle ABC) = 90^\circ

[dark sparrow]

is that clear?

[west dune]

No

Why is that = to 90?

[dark sparrow]

=tex \angle BAD + \angle ABC = 180^\circ

[west dune]

I'm not allowed to guess that <AEB is 90 because the actual question

[dark sparrow]

we haven't invoked AEB yet

anywhere

=tex \angle BAD + \angle ABC = 180^\circ \ \frac{1}{2}(\angle BAD + \angle ABC) = \frac{1}{2} \cdot 180^\circ

[west dune]

@unborn bane Said that we are comparing it to 90 because the third angle

ok, it's clear now @dark sparrow

How do we invoke AEB now?

[dark sparrow]

patience

let me continue

[west dune]

Yea. ofc

[dark sparrow]

=tex \frac{1}{2}(\angle BAD + \angle ABC) = 90^\circ \ \angle BAE + \angle ABE = 90^\circ

[dark sparrow]

is that clear now

[west dune]

Yes

[dark sparrow]

=tex \angle BAE + \angle ABE + \angle AEB = 180^\circ

[west dune]

Yes

so if BAE + ABE are 90 , AEB will be 90

Thanks!

[unborn bane]

k what isn't that what I said? zzz

I'm bad at explaining

[zealous patrol]

@dark sparrow what did you use to make this figure? https://cdn.discordapp.com/attachments/326138757474680852/405745656011948033/unknown.png

[west dune]

@unborn bane
The 90 isn't because the third angle

[unborn bane]

the third angle is the required angle

thats what I meant by the third angle

[west dune]

Yes, but we don't know it's 90

[unborn bane]

we do actually

since the other two angles add up to 90

and all three angles must add up to 180

[dark sparrow]

@unborn bane MS paint

lol

[west dune]

Wrong mention :/

[unborn bane]

I didn't ask that but uh okay

[zealous patrol]

lol I forgot we have shape tools in paint

[dark sparrow]

oh, those are just straight lines

[west dune]

@dark sparrow In the trapeze the diagonals split the angles in half?

[dark sparrow]

in a trapezoid? no

[west dune]

ok

ABCD is a parallelogram
AE = ED (I know it doesn't look like that but...)
<BED & <BEA = 90 degree
I need to prove that BD = CD

I know the image is so fucked up but please try to imagine it's perfect.

I want to prove that <DBC = <BCD

To get BD = CD

But how can I do that?

Anyone ?

[final prairie]

E?

[west dune]

This one @final prairie

[final prairie]

Show ABE and DBE are congruent

youll get AB=BD and AB=CD so BD=CD

[west dune]

What makes them congruent? @final prairie

OHHH I know why

thank you!

[tropic stirrup]

*similar

congruent is when all the correspondent sides are equal pairwise

[west dune]

No. they need to be congruent to say that AB = BD

[tropic stirrup]

What

Oh

I just looked at the diagram lol x'D

[west dune]

😄

[tropic stirrup]

Useful tip: if you draw a line as you keep pressing shift in MSPaint, it'll automatically adjust it as horizontal, vertical or 45° line.

[west dune]

I knew about horizontally/vertically but not 45 degree

thanks.

[tropic stirrup]

No problem uwu

[restive void]

so its tan D

well

wait

yes

opposite adjacent right

i lost notes

:(

so 80/18

i think

[upper karma]

Sorry to interrupt, but is (x-h)^2 + (y-k)^2=r^2 the equation for a circle?

[restive void]

unsure

[thorn talon]

@upper karma yes

[upper karma]

Thank you!!

[restive void]

to find x, i do tan(32) = x/12?

[thorn talon]

Yes

[restive void]

so

i multiply by 12 right?

[thorn talon]

Yep

[restive void]

so tan(32)*12 = x?

[thorn talon]

Yep

[restive void]

is the answer 7.5?

[runic jackal]

==tand(32)

[charred spear]

0.62486935

[runic jackal]

yes

[restive void]

ty

this is what really confused me

you get tan(40) = 13/x

and all i know is you cant have x in the denominator

like he was saying switch the thing multiplied by tan (40) and x?

[thorn talon]

well you can during the working

you just need to get x out of the denominator

yep

you can do that

[restive void]

oh

so then you would just do 13/40?

[thorn talon]

tan(40)

but yes

[restive void]

wait

i thought we made it tan(x) = 13/40

[thorn talon]

no

that would be solving for angles

but we are solving for sides

[restive void]

so im so lost on what to do :(((

[thorn talon]

tan(40) = 13/x

that's correct

now you can do the swap thing

x = 13/tan(40)

it's really just a "shortcut"

[restive void]

OH

[thorn talon]

you basically multiply through by x, then divide through by tan(40)

[restive void]

i move the tan with it

im so dumb

lol

is the answer 15.49

or did i do it wrong

[thorn talon]

looks right to me

[restive void]

im not the best at math lol

ill be here a lot

afte all this chat saved my first semester grade lol

[thorn talon]

nice

math gets better over time with work

[restive void]

uh

what the hell do i do here

find area

erm

[thorn talon]

ok

well

[restive void]

isnt it base/height times two

[thorn talon]

yeah

[restive void]

or something

so i need x

use pythagor

[thorn talon]

yep

no

[restive void]

then what

no?

wouldnt hypot be base in this

okay

im lost already lol

[thorn talon]

you don't have enough information to use pythagoras

think about how you solved for x before

[restive void]

well if i solve for x

[thorn talon]

yes

solve for x using tan

[restive void]

so i use tan(38) = 11/x?

[thorn talon]

yep

[restive void]

so now i have x = 13/tan(38)

[thorn talon]

yeah

now

it depends on how accurate you want to be

you could approximate here

or use the exact value

into the next step

[restive void]

theres a next step

what

[thorn talon]

(base*height)/2

[restive void]

aaaaaaaaaaaaaaaa

i forgot

wait so x = 16.639?

just making sure i did that right

[thorn talon]

yep

[restive void]

so

whats my base and my height

11 is height or base

[thorn talon]

11 and 16.639

doesn't matter

[restive void]

oh yeah

it doesnt

[thorn talon]

base * height is same as height * base

[restive void]

area = 91.5145?

[thorn talon]

yep

[restive void]

same process here right

[thorn talon]

yep

[restive void]

tan(22) = 7/x

okay

[thorn talon]

yes

[restive void]

area = 60.6375

?

or just go offline frown

[thorn talon]

looks right

[restive void]

hell yeah

im getting this

:)

[thorn talon]

nice

it depends on the teacher

but generally, i always round at the end

[restive void]

yeah, i should

whats the permiter of a triangle

[thorn talon]

e.g.

a + b + c

[restive void]

side+side+side?

[thorn talon]

yes

[restive void]

so i need pythag for this

well

11.65 wasnt there

[thorn talon]

yeah

[restive void]

in the normal book

someone drew that

lol

[upper karma]

lol

[restive void]

free answer

probably best to do it by hand so its been awhile since i used pythag but its 6^2 + b^2 = 11.65^2?

[upper karma]

check it first

[restive void]

oh yeah

probably should

[upper karma]

could be a first class troll

[restive void]

wait i cant

it has to be 11.65

wait

[upper karma]

you can

[restive void]

wait im so lost

how

i only have opposite side

[upper karma]

soh cah toa

[restive void]

if that was written in

[upper karma]

tan(31)=6/x

[restive void]

so i should assume thats correct

[upper karma]

find x

[restive void]

oh

well

[upper karma]

oh wait

[restive void]

lets see

[upper karma]

nvm

[restive void]

wait thats not right?

[upper karma]

hypotenuse can't be adjacent

[restive void]

yeah right

so couldnt i put that bottom line as adjacent

and put x

[upper karma]

you can find the other adjacent and then use pythogoras

[restive void]

so tan(31) = 6/x

and solve for hypot with pythag

[thorn talon]

yes

[restive void]

i got x = 9.9

right or no

[thorn talon]

yes

[restive void]

so then pythag

[thorn talon]

though, if you round every step, it can get quite far from the actual answer

[upper karma]

square it and add to 36

then squa
re root

[restive void]

wait add to 36?

isnt 36 a leg

so i would add to c^2

[upper karma]

6^2

[restive void]

yes

so isnt the equation here 98.01 + 36 = c^2

then add those

then root?

[upper karma]

yes that's what I said

[restive void]

oh

misunderstood you

sorry

hey how the hell do you write a decimal root as a simplified root

so root 134.01

how the hell do you write that as a simplified radical

[upper karma]

calculator not allowed?

[restive void]

my teacher likes simplified radicals

wait

im so dumb

i dont need to do that

i just need the perimiter lol

im so silly sometimes

wait no i still have to right

cuz c^2 is still there

[upper karma]

== root 134.01

[charred spear]

Failed to parse equation: Invalid syntax at position 1

root 134.01
 ^

[upper karma]

bruh

[restive void]

im so lost

lol

[waxen gorge]

== (134.01)^(1/2)

[charred spear]

11.57626883

[upper karma]

=pup square root of 134.01

[charred spear]

Query made by @upper karma
Data sourced from Wolfram|Alpha: http://www.wolframalpha.com/input/?i=square+root+of+134.01
Do more with Wolfram|Alpha Pro: http://www.wolframalpha.com/pro/

[restive void]

ill just do that lol

[upper karma]

hmm

that's quite far from 11.65

[restive void]

lol

my teacher didnt show me how to do any of this in class..

not even gonna bother with the next two lol

[upper karma]

it is actually 11.65

[restive void]

what

well

too late lol

i cant be bothered with math

its so hard for me

[upper karma]

you just gotta think with the problem solving skill

and not with memorizing skill

[restive void]

like

how the hell do i do this

[upper karma]

try to understand and not just remember

what's the question

[restive void]

is y 60? like im not given thats an angle or segment bisector

like

[upper karma]

yes y is 60

[restive void]

i cant just say y = 60 right

why

im not given thats a bisector

[upper karma]

it's an isocles triangle

if I spelled that right

[restive void]

isocoles

or something

whatever it doesnt matter

[upper karma]

yea

[restive void]

i dont even see where to start

[upper karma]

you're given the angles

just use soh cah toa

[restive void]

tan(42) = z/60?

[upper karma]

yes

[restive void]

i dont have a reference angle

[upper karma]

or you can do

[restive void]

so i got 10.8 = 2/60

i mean

fucki

z

z/60

[upper karma]

nvm

z/60 is simple

[restive void]

so do i multiply by 60

[upper karma]

just multiply

yes

[restive void]

uh

that seems like an awfully big number

for z

[upper karma]

seems good

[restive void]

okaaaay

648

[upper karma]

?

that's your z?

[restive void]

so now i can use 48 as a reference angle

yes

unless my calc fucked up

or i messed up doing tan(42)

yeah probably that

[upper karma]

it did

[restive void]

i think my calc fucked up

what did you get

[restive void]

cuz i got 10.8 = 2/60

lol

uh

yeah

what is your tan, 60?

how?

im so lost

[thorn talon]

tan(42) = z/60

multiply both sides by 60

z = tan(42) * 60

[upper karma]

degree mode verified

[restive void]

i tyhink

OHJ

yes

o gpt ot

i got it

lol

[mossy oriole]

hey

[restive void]

so i get .900 = z?

welll

.9

[mossy oriole]

Wait im gonna go up and see the full problem

[restive void]

wel

sjot

54.024

[mossy oriole]

Is there an image you can post?

[restive void]

@upper karma is that what you got

its like

way up

im kinda not good at math lol

[upper karma]

@restive void yes

[restive void]

jesus

i still have like 20 more questions

i really suck at math

btw

smile

[upper karma]

be optimistic

[restive void]

uh

tan 45 is just 1?

[thorn talon]

indeed

[mossy oriole]

Tan 45 = 1 yes

[restive void]

see math is weird

lol

[mossy oriole]

well tan(x) = sin(x)/cos(x)

and sin(45) = cos(45)

[restive void]

it just is

[thorn talon]

imagine you have a square, with side lengths one

[restive void]

for my brain

[thorn talon]

and then cut through the diagonal

[restive void]

yessir

[thorn talon]

that's like one way to visualise it i guess

[restive void]

i need a break from math

my brain hurts lol

[upper karma]

are you sure math is the cause

[restive void]

to me

uh

probably more me not understanding

but its probably math

lol

well that doesnt make sense

anyway

yeah ill be back here maybe later

idk

[restive void]

do you need to get variables out of denominators for sine

[thorn talon]

what do you mean?

[restive void]

so i have sin(48) = 11.1/a

[thorn talon]

yes

the goal is to solve for a

so you want it isolated and out of the denominator

[restive void]

mkay

@thorn talon can you check my work for n? i got 10.4

[thorn talon]

yeah

looks right

[restive void]

thank you

uh

how?

i cant use the 90 degree angle

so how..

[upper karma]

look

you have

sin(x)=8√2/c

solve for c using pythogoras

then solve for sin(x)

[restive void]

i figured it out, for some reason my mind switched to having to use sin, cos, or tan with a number

[upper karma]

happens

[thorn talon]

does it actually require you to solve for the angle or nah?

[upper karma]

says just sin x

I guess not

even if it was, that's just one extra step

[thorn talon]

true

[junior scaffold]

How?

[dark sparrow]

what've you tried so far and where did you get stuck?

[junior scaffold]

well i first descided to calculate the area of the sector

then minusing from the area of the triangle

so area of sector is 1/2*r^2 * theta

and area of triangle is 1/2*absin theta

i still end up getting it wrong tho

[dark sparrow]

okay, can you show your work?

[junior scaffold]

i can type it out

1/2 * 4 * 3pi / 4

which is 3pi/2

1/2 * 2 *2 *sin 3pi/4

[dark sparrow]

...

okay first off, that doesn't sound right at all

second, did you really use a calculator to compute sin(3π/4)?

[junior scaffold]

ye

[dark sparrow]

are you sure it's not in degree mode

[junior scaffold]

🤦

ok i got thx a lot

[shell forge]

Can I get some help?

I need to find the values of x and y so that the quadrilateral is a parallelogram. I found x is 27 but I'm having trouble with the y. The equation is (1/3)y=y-60. What do I do first?

[neon fossil]

you need to group up the y

because you want it to be alone

so

(1/3)y - y = -60

(-2/3)y = -60

y = 90

[shell forge]

Okay thanks 😃

[wary sluice]

How do I find the center of.. a 3d circle
(English is not my first language)

And the radius

[neon fossil]

a 3d circle is called a sphere

you want to "complete the squares"

here's the idea. if you have an equation like

x^2 + bx = c

you can express the left hand side as a square

like so

x^2 + bx + (b^2)/4 = c + (b^2)/4

(x+b/2)^2 = c + (b^2)/4

this will help you, in your problem, to put the sphere in its standard form

as (x-x0)^2 + (y-y0)^2 + (z-z0)^2 = r^2

[wary sluice]

okay, thanks! 😄

[rocky widget]

ok someone pls help i missed 10 days worth of school and i have no idea where to start

[neon fossil]

well, start with a

draw the graph (with the x, y coordinates) and locate the points

then draw the circles

[rocky widget]

okay

[neon fossil]

try to draw it to scale

[rocky widget]

wym draw the circles? like how do i know how big to make them or how many?

my teachers making me use this app, but i dont even know if im using it right bc i missed her class

[neon fossil]

each tower covers a circle

from its center, of radius 3 km

[dusty garden]

help me understand translation and enlargment... plz!

[upper karma]

multiply the coordinates of the figure by -1.5 and then translate 3 units right 6 units up

[restive void]

Assistance porfavor

so im starting from the bottom and working my way up

but these triangles are very confusing

[waxen gorge]

Ur teachers just mean

And trigonometry is racist

[restive void]

very very mean

:(

@waxen gorge do my hw smile

[waxen gorge]

Except I'm not at home :/

[restive void]

:(

[runic jackal]

if at some point in time u make a calculation error gg

[waxen gorge]

And I'm.not gonna do cos(28°)

[restive void]

you have a fun calc smile

[runic jackal]

u also have to consider tons of significant figs

or if u can store the ans that would be useful

[restive void]

which is why im here because im not fucking good at this lo

[waxen gorge]

Just don't do the sig figs

And do everything in a row

like keep going on ur calculator

[restive void]

i cant do this

what the fuycickfk

[runic jackal]

from the bottom triangle, u can try finding the hyp

[restive void]

@runic jackal i got a negative value using cos

[runic jackal]

wot no

so 8/hyp = cos 28°

hyp = 8/cos28°