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January 31, 2015

January 31, 2015

Posted by **Steve** on Sunday, March 31, 2013 at 3:28pm.

Is it 2sin(theta)cos(theta)?

- math -
**Steve**, Sunday, March 31, 2013 at 3:35pmyes,

sin 2x = 2 sinx cosx

cos 2x = cos^2 x - sin^2 x

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