Asked by lindsey
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.
Answers
Answered by
Reiny
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°
Ø must in quadrant IV
(we know cos30° = √3/2 and also sin 30°=1/2)
cosØ = √3/2
sinØ = -1/2
Ø = 330°
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