(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

cos^2x+2sin^2x=-1

Solve for x

2. Relevant equations

3. The attempt at a solution

I don't really know how to start. I know cos^2x+sin^2x=1 but I don't think I can apply that with the 2 thrown in there.

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# Solving a trig equation for x

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