precal

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can anyone help me with this question.

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 -

    cos(-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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