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July 31, 2015

Homework Help: Calc

Posted by Chris on Thursday, April 18, 2013 at 11:42am.

Which expression is equivalent to sin(3x) + sin x?


A.

2cos(2x)sin x




B.
2sin(2x)sin x




C.
-2sin(2x)cos x




D.
2sin(2x)cos x




E.
-2cos(2x)sin x

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