SOLUTION: please help me answer my question find all solutions of the equation 4cos^2x-4cosx+1=0

SOLUTION: please help me answer my question find all solutions of the equation 4cos^2x-4cosx+1=0

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Question 298471: please help me answer my question
find all solutions of the equation 4cos^2x-4cosx+1=0
Answer by Greenfinch(383) (Show Source): You can put this solution on YOUR website!
Treat as a quadratic. Factorize it into
(2cosx -1)^2 = 0
cos x = 1/2
x = 60 or 300 degrees
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