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September 20, 2014

September 20, 2014

Posted by **kelly** on Sunday, November 18, 2007 at 6:26pm.

- calculus -
**Michael**, Sunday, November 18, 2007 at 6:34pmThe even-odd 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 y-value, so sine at that point is 0.

-sin(pi) = -0 = 0

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