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September 18, 2014

September 18, 2014

Posted by **sonu** on Monday, July 8, 2013 at 12:39pm.

- math -
**Steve**, Monday, July 8, 2013 at 2:18pmsin 3x

sin2x cosx + cos2x sinx

2sinx cosx cosx + (1 - 2sin^2 x)sinx

2sinx cos^2 x + sinx - 2sin^3 x

2sinx (1-sin^2 x) + sinx - 2sin^3 x

2sinx - 2sin^3 x + sinx - 2sin^3 x

3sinx - 4sin^3 x

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