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December 18, 2014

December 18, 2014

Posted by **Purplechick4** on Wednesday, February 8, 2012 at 12:59am.

- Trig -
**Steve**, Wednesday, February 8, 2012 at 5:41amsin(-t) = -sin(t) = -4/5

sin(t-2pi) = sin(t) = 4/5

cos(t) = 3/5

cos(pi-t) = -3/5

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