Given an angle pheta in standard position, if P(�ã3/2, -1/2) lies on the terminal side and on the unit circle, find sin pheta and cos pheta.

Answer 1

if the terminal side ends at P(√3/2 , -1/2) then
Ø must in quadrant IV

(we know cos30° = √3/2 and also sin 30°=1/2)

cosØ = √3/2
sinØ = -1/2

Ø = 330°