October 10, 2015

Homework Help: TRIG/ALGEBRA

Posted by cheyanne on Friday, February 24, 2012 at 1:20am.

1) Find the exact value. Use a sum or difference identity.
tan (-15 degrees)

2) Rewrite the following expression as a trigonometric function of a single angle measure.

cos 3x cos 4x - sin 3x sine 4x

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