SOLUTION: Determine the general solution for cos2x - 2sin2x = -1

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Question 1084912: Determine the general solution for cos2x - 2sin2x = -1

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Determine the general solution for cos2x - 2sin2x = -1
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Is it cos(2x) ?
Or cos^2(x) ?