Answer
(0,1)
cos($\frac{\pi}{2}$) = 0
sin($\frac{\pi}{2}$) = 1
tan($\frac{\pi}{2}$) = undefined
Work Step by Step
Using the unit circle when t = $\frac{\pi}{2}$,
The (x,y) point is (0,1)
Using the coordinate points:
cos($\frac{\pi}{2}$) = 0
sin($\frac{\pi}{2}$) = 1
tan($\frac{\pi}{2}$) = undefined
