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September 23, 2014

September 23, 2014

Posted by **Raeven** on Friday, October 12, 2012 at 12:17pm.

tan(-x)cosx

- PreCal -
**Steve**, Friday, October 12, 2012 at 3:38pmtan(-x) cosx = -tanx cosx = -sinx/cos^2(x)

not sure that's much simplified

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