-9*cos(2*x)=2

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Solution for -9*cos(2*x)=2 equation: 


Simplifying
-9cos(2x) = 2

Remove parenthesis around (2x)
-9cos * 2x = 2

Reorder the terms for easier multiplication:
-9 * 2cos * x = 2

Multiply -9 * 2
-18cos * x = 2

Multiply cos * x
-18cosx = 2

Solving
-18cosx = 2

Solving for variable 'c'.

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

Divide each side by '-18osx'.
c = -0.1111111111o-1s-1x-1

Simplifying
c = -0.1111111111o-1s-1x-1

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