SOLUTION: Find all solutions to the equation. Cos^2 x+2 cos x+1=0

SOLUTION: Find all solutions to the equation. Cos^2 x+2 cos x+1=0

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Question 937475: Find all solutions to the equation.
Cos^2 x+2 cos x+1=0
Answer by josgarithmetic(39625) (Show Source): You can put this solution on YOUR website!
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