February 28, 2017

Homework Help: trig

Posted by B.S. on Friday, June 12, 2009 at 1:00am.

The expression 4 sin x cos x is equivalent to which of the following?

(Note: sin (x+y) = sin x cos y + cos x sin y)

F. 2 sin 2x
G. 2 cos 2x
H. 2 sin 4x
J. 8 sin 2x
K. 8 cos 2x

Can someone please explain how to do this problem to me?

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