4cos^20=1

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Solution for 4cos^20=1 equation: 


Simplifying
4cos20 = 1

Solving
4cos20 = 1

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Divide each side by '4os20'.
c = 0.25o-1s-20

Simplifying
c = 0.25o-1s-20

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