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April 18, 2015

April 18, 2015

Posted by **latrice** on Wednesday, September 23, 2009 at 2:37pm.

Let P be the point on the unit circle U that corresponds to t. Find the coordinates of P and the exact values of the trig functions of t, whenever possible.

(a) -pi

(b) 6pi

- precal -
**MathMate**, Wednesday, September 23, 2009 at 5:52pmcos(-pi)=cos(pi)=-1

Note: cos(-x)=cos(x), cos is an even function

cos(6π)=cos(0)=1

Note: cos(x)=cos(x-2kπ) where k is an integer.

sin(x) = sqrt(1-cos²(x))

tan(x) = sin(x)/cos(x)

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