3cos^2(x)=2

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Solution for 3cos^2(x)=2 equation: 


Simplifying
3cos2(x) = 2

Multiply cos2 * x
3cos2x = 2

Solving
3cos2x = 2

Solving for variable 'c'.

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

Divide each side by '3os2x'.
c = 0.6666666667o-1s-2x-1

Simplifying
c = 0.6666666667o-1s-2x-1

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