Trigonometry

[fossil bolt]

Hi, I need help with this task (at least “a”). Thanks for help.
Translated: The triangle ABC is a right angle with angle C = 90 degree. Use sin, cos or tan to the angles in the triangle to express the… relationship (for a) BC/AC.

[kindred crown]

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[meager owl]

Draw the triangle, then remember the definitions of trigonometric functions for angles of a right triangle.
Note that for each option you will get two answers.

[fossil bolt]

thank youu, i have now drawn the triangle but I don’t know from which angle I have to look from to do task “a”

[placid creek]

@fossil bolt has given 1 rep to @meager owl

[fossil bolt]

like how am I supposed to calculate the relationship

[meager owl]

What do you mean?

You are not calculating anything here.

[fossil bolt]

I don’t know what is the adjacent and the opposite side for C

for angle C

should I know that do you think?

[fossil bolt]

idk ahah, I don’t think I really understood the question

[meager owl]

Not sure what you mean.
You need to express the ratios using trigonometric functions of angles A or B.

[fossil bolt]

but I know the hypotenuse

[meager owl]

You don't know any lengths, and you don't need them.

[fossil bolt]

aahh okk

i think i understand

thank youu

[whole nacelle]

what is forholdet 💀

[fossil bolt]

the relationship

[whole nacelle]

in english

sin

cos

tan

waht

[fossil bolt]

wait wdym

[whole nacelle]

like

what does forholdet translate to in english

[fossil bolt]

the relationship

between something

[whole nacelle]

OUHH

alright

wait

[fossil bolt]

yee

[whole nacelle]

this is the triangle

[fossil bolt]

yes

[whole nacelle]

what do you think BC/AC can be

in terms of angle B

[whole nacelle]

yeee

[whole nacelle]

.

[whole nacelle]

.

[fossil bolt]

tan?

[whole nacelle]

YESSSSSSSSSSSSS

[fossil bolt]

that’s it?

[whole nacelle]

and angle A?

[fossil bolt]

haha

[whole nacelle]

in terms of angle A?

[fossil bolt]

tan as well right?

[whole nacelle]

nope

[fossil bolt]

wait

[whole nacelle]

think carefully

[fossil bolt]

wait we are doing “a” still

task a

[whole nacelle]

await

m

my

keyboar

is

messing up

asaaaaaaaaaaaaaaaaaaaaaaaaaaa

okay

its fine now

[fossil bolt]

but BC for A is the opposite side and AC for A is the adjacent side

so it’s tan

[fossil bolt]

ahaha nicee

[whole nacelle]

wat is wno

no

it isnt

WHAT IS HAPPENING AAHH

ill restart my p

[fossil bolt]

.

you asked this

[whole nacelle]

its ot*

its ot

bro

ot

i ant type it

[fossil bolt]

your keyboard 😭

I understand

you meant not

[whole nacelle]

NOOO

:sob

:sob

BRUH

ILL RESTART

[fossil bolt]

ok

[whole nacelle]

Its cot

Cot(A)

[fossil bolt]

cot?

[whole nacelle]

And Tan(B)

CotA=TanB=BC/AC

[fossil bolt]

we haven’t learned about cot yet

[fossil bolt]

but why aren’t we finding for C as well

is that possible

[whole nacelle]

no

c is the right angle itself

😭

you cant get trigonometric ratios for C

[fossil bolt]

wait I am so confused, do you mean cos 😭

I am so sorry

[whole nacelle]

haven;t you learned cot?

[fossil bolt]

aaah ok because it’s 90 degree?

[fossil bolt]

no

[whole nacelle]

no, there is a different reason, leave that

[fossil bolt]

aa okk

[whole nacelle]

ahhh its also a trigonometric ratio like sin cos tan

tan = opposite/adjacent right?

[fossil bolt]

yes

[whole nacelle]

cot = adjacent/opposite

[fossil bolt]

ohh ok

[whole nacelle]

this is the only different

so you can say

tanx = 1/cotx

leave it

it'll get complex for you

as you havent learnt cot yet

stick with sin, cos, tan for now

[fossil bolt]

ye

[whole nacelle]

so, BC/AC = TanB

[fossil bolt]

in the book the answer is just tan A

[whole nacelle]

and trigonometric ratios for the right angle itself are undefined

[fossil bolt]

but why

[whole nacelle]

for now

[fossil bolt]

yes

[whole nacelle]

i think your book treats cot and tan the same 💀

[fossil bolt]

idk

[whole nacelle]

is this the year you've started trigono?

[fossil bolt]

yes

[whole nacelle]

ouh, so i guess they wanted to make it simple for you

otherwise you would have 6 ratios instead of 3

as cot and tan are reciprocals of each other, there are reciprocals of sin and cos aswell

[fossil bolt]

ahhh I understaaaans

understand

now

thank you

+close