Can someone pls help me

[fervent wolf]

1. Ask your question and show the work you've done so far. If you've posted a screenshot of a question, specify which part you need help with.
2. Wait patiently for a helper to come along.
3. Once someone helps you, say thank you and close the thread with:

   +close
   

4. Feel free to nominate the person for helper of the week in #helper-nominations
5. Do not ping the mods, unless someone is breaking the rules.
6. If you're happy with the help you got here, and the server overall, you can contribute financially as well:

[junior pulsar]

@carmine anchor

@sage marten

<@&1283689826742440016>

[toxic walrus]

hmm

have you studied trigo?

[junior pulsar]

yes

what formula do i use here??

[toxic walrus]

hmm

lets look where we can apply it

where do you think we should look for?

[rare stag]

Trigonometry?

[junior pulsar]

yes

[toxic walrus]

yeah basic

[junior pulsar]

basic?

[sage marten]

Don't ping random people

[junior pulsar]

not for me

[toxic walrus]

ignore that message

[junior pulsar]

sorry

[toxic walrus]

so see

[kind junco]

Do NOT randomly ping people in your help thread, especially not the Helper Mod for no reason

This is a warning

[junior pulsar]

sorry

i was just desperate

[junior pulsar]

yes

[toxic walrus]

what formulas do we know

[tiny parrot]

you need to do trigo

[toxic walrus]

@junior pulsar

[junior pulsar]

so

sine rule

cosine rule

[tiny parrot]

yeah

[junior pulsar]

area of triagle

[tiny parrot]

and sohcahtoa

[junior pulsar]

ye

[toxic walrus]

whats does sine formula say

[tiny parrot]

no because
A) you dont have the area
B) youre finding a side length that doesnt have the area discussed

[junior pulsar]

a/sina = b/sinb = c/sinc

[toxic walrus]

lets see that sine formula

whats the formula for sine

[tiny parrot]

@toxic walrus please can i help him and not u

[junior pulsar]

this

[toxic walrus]

i came first..

[tiny parrot]

theres another sine rule

[toxic walrus]

dude cmon

[tiny parrot]

for finding angles

[toxic walrus]

@tiny parrot

lemme do it

[tiny parrot]

bruh

[rare stag]

Lol

[junior pulsar]

rearanging it gives

[tiny parrot]

but ive never gotten to help ayone

[toxic walrus]

same

[rare stag]

Lameti came first

[toxic walrus]

its my first time

exactly, thank you

[tiny parrot]

fine

[junior pulsar]

guys pls

[tiny parrot]

bye

[toxic walrus]

so jinoy

you said sin right?

[rare stag]

If he cant explain then ari

[junior pulsar]

sine rule for angle is

[toxic walrus]

whats the formula for sin a?

[toxic walrus]

well its a ratio right?

[junior pulsar]

what is do is substitute into sine rule then cross multiply

i do*

[toxic walrus]

forget the sine rule

[junior pulsar]

ok

[toxic walrus]

so whats sin x = oppo / hypotenous

spelling might be wrong

[junior pulsar]

yea sohcohtoa

[toxic walrus]

hyptenous is the longest side

[junior pulsar]

yeds

[toxic walrus]

yeah

so

[junior pulsar]

ACE is hyp

[toxic walrus]

can you see if we have any info to take out sin of any angle?

(look for right angle triangles)

[junior pulsar]

yes there is 1

[toxic walrus]

what is it

[junior pulsar]

ACB

[toxic walrus]

how are we gonna write the sin a= ? then

[junior pulsar]

uhm

sin 90?

[toxic walrus]

no

see sin is the ratio of sides

we know that

so sin a can be writtin as ratio of what sides

[junior pulsar]

im not sure

what we do in school is half the triangle

[toxic walrus]

hmm

one second then

[junior pulsar]

ok

[toxic walrus]

so lets first see the meaning of sin cos and tan

can you name the sides for me of this triangle abc

if angle a = 90

@junior pulsar

[junior pulsar]

name it?

[toxic walrus]

like ab is the base

[junior pulsar]

ye

bc is hyp

[toxic walrus]

what is bc and ca?

[tiny parrot]

so what are we left with

[toxic walrus]

yes

[junior pulsar]

ca is adj

no

opp

[toxic walrus]

so you need to explain me the sin cos and how to apply them to get ratio of sides

[junior pulsar]

ab is adj

[toxic walrus]

then he would be able to do the question

[tiny parrot]

which angle is theta

[toxic walrus]

your choice dude

[tiny parrot]

ok lets say angle ABC is theta

we know that

[toxic walrus]

idk why they even give the area

[tiny parrot]

sinθ = opposite/hypotenuse

[toxic walrus]

we can take ae without using area

[junior pulsar]

okey

[tiny parrot]

tanθ = opposite/adjacent

[junior pulsar]

yes

[tiny parrot]

cosθ = adjacent/hypotenuse

[junior pulsar]

yea

[tiny parrot]

sinθ = AC/BC

[junior pulsar]

okey

[tiny parrot]

cosθ = AB/BC

tanθ = AC/AB

[junior pulsar]

k

[tiny parrot]

so what do you want to do now

[junior pulsar]

uhm

sin

?

[tiny parrot]

can i do this in my book

[junior pulsar]

ye

[tiny parrot]

ill send photo

ok

[junior pulsar]

in the mean time ill revise for interquartile range and standard deviation

[tiny parrot]

you do NOT need to revise for iqr

iqr is easy

its q3 - q1

[junior pulsar]

its been ages since we doe it

so im gonna do a few questions

[tiny parrot]

wait r u doing gcse?

[junior pulsar]

in scotland

its n5

bt gscce yes

in england

same thing

[tiny parrot]

alr

[junior pulsar]

this test

has only 4 topics

Trig Triangles
Simultaneous Equations
Stats
Straight Line

just a class test

but i need to do good in it

[toxic walrus]

wtf is that..

[rare stag]

Kind of like 1/4 rand relation and all

[toxic walrus]

huh

see @junior pulsar

[rare stag]

Mm yo pinged

[toxic walrus]

by mistake

[junior pulsar]

?

[toxic walrus]

take the sin relation of angle a

what that would be

[junior pulsar]

wdym?

[tiny parrot]

guys you are overcomplicating

you can find ac with pythagoras

a^2 + b^2 = c^2

that means 18^2 = 8^2 + AC^2

that means AC^2 = 18^2 - 8^2

,w square root (18^2 - 64)

[obsidian mirage]

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Requested by theasiankid17

[tiny parrot]

so AC is 2root65

[toxic walrus]

obv you can

but understanding basic trig relations is far more beneficial

[toxic walrus]

you dont need ac bruh

[tiny parrot]

fair

[toxic walrus]

you need ae

what are you doing

[tiny parrot]

yeah

AE = AC + CE

[toxic walrus]

good lucking findind ce

with pythgorus

[tiny parrot]

at least we know that AE is greater than 2 root 65

[toxic walrus]

.....

i'll just write the solution

[tiny parrot]

NO

DO NOT SEND SOLUTION

[toxic walrus]

jinoy, you can see it and ask where you dont understand

[tiny parrot]

YOU NEED TO SEND WORKING FIRST

NO DO NOT SEND SOL

[toxic walrus]

thats solution?

i am not sending answer..

[tiny parrot]

ok

do that

[junior pulsar]

ok stats revsision done

ez

[toxic walrus]

Sin A = 8/18 = 4/9
Drawing perpendicular from D to AE at F, forming triangle AFD

the DF/AD = Sin A

DF= 24 * 4/9

then Area ( ADE ) = 160 (Given)
1/2* DF* AE = 160

AE = 320 /DF

[toxic walrus]

you got the value of df from here

put it and you get the answer

@junior pulsar

[junior pulsar]

hmmm

right answer is 30cm

it shows me

but i dont know how to work it out

[toxic walrus]

@tiny parrot

[rare stag]

Lametu

Want hint

[toxic walrus]

wdym want hint

idk how can i simpify more

[rare stag]

You got answer?

[toxic walrus]

obv

[rare stag]

Nice

1/2 bc sin theta = 160

And we find sintheta and done

We no be

We know sintheta

We find c

If you wanted one more way

[toxic walrus]

btw

thats the same way

[rare stag]

Mm my bad then

[toxic walrus]

bsino is altitude

[rare stag]

Ok nice

[toxic walrus]

okay...

[rare stag]

Your first help👍

Today

Ig

[toxic walrus]

nah

i wasnt able to do it

[rare stag]

Why do you say so

[toxic walrus]

he didnt understand it probably

[rare stag]

Oh ok

But still its good👍

[toxic walrus]

i guess

[junior pulsar]

so

did you guys gget 30?

+close