SOLUTION: Solve the equation Cos2x=2+2cosx where x is greater or equals to 0 and less or equals to 360

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Question 1065980: Solve the equation
Cos2x=2+2cosx where x is greater or equals to 0 and less or equals to 360
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Is it cos(2x) or cos^2(x)?