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June 30, 2015

Homework Help: precal

Posted by bee on Monday, December 3, 2012 at 10:02pm.

when solving for all solutions how do I work out this problem: cos4(alpha)=cos2(alpha)
and when verifying each identity how do I complete this problem: sin (alpha/2)=sec alpha -1/2sin (alpha/2)sec alpha

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