February 25, 2017

Homework Help: Pre-calculus

Posted by Lucy on Monday, October 13, 2008 at 11:42am.

solve 4 sin^2x + 4 sqrt 2 cos x-6=0 for all real values of x.

Going by the example in the book I got to: 4 cos^2x + 4sqrt2 cosx -10 = 0 but do not know how to proceed.

Any help would be great.


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