Question

@AZ

Answer 1

so it's not too difficult to try to prove it

Answer 2

let's just use the angles 270 and 180

Answer 3

3pi/2 and pi, respectively

you should know that in your unit circle
they write the values as (cos, sin)

Answer 4

Ye

Answer 5

Well, the coordinates yes

Answer 6

\(\sin(\theta) = cos (\dfrac{\pi}{2} - \theta )\)

Answer 7

so use \(\theta = \dfrac{3\pi}{2}\)

Answer 8

So I can just use examples of radian measures to do this?

Answer 9

yes

Answer 10

kk thanks

Answer 11

no problem

Answer 12

wait but it says `all` angles

Answer 13

if i give examples, won't that just be for specific ones?

Answer 14

no, now you're proving that it's not true only for angles between 0 and 90

but really all angles

you could even use more angles to prove it

Answer 15

mhm