Posted by kelly on Sunday, November 18, 2007 at 6:26pm.
Use the even odd properties to find the exact value of the expression. It may be helpful to draw the unit circle graph sin(pi)

calculus  Michael, Sunday, November 18, 2007 at 6:34pm
The evenodd property for sine states that sin(x) = sin(x).
sin(pi) = sin(pi)
The point on the unit circle at pi (or 180 degrees) is (1, 0). Sine corresponds to the yvalue, so sine at that point is 0.
sin(pi) = 0 = 0
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