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September 1, 2014

Homework Help: Trig

Posted by Taylor on Wednesday, February 17, 2010 at 4:46pm.

How do you express sin4x as a trigonometric funcition of x using the identities? I think that you are supposed to start with the sine sum identity and then use the double angle identities for sin2A and cos2A, but after that I get stuck...

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