Thursday
October 23, 2014

Homework Help: trig--power reducing formulas

Posted by Brian on Monday, April 20, 2009 at 1:56pm.

Having trouble with this problem:

Rewrite the expression as an equivalent expression that does not contain powers greater than 1.


Cos³x

My answer: cos³x=(cos²x)(cosx)

=(1+cos2x/2)(cosx)-->cos+cos³x/2...which is wrong

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