3*cos(2x)=-1.8

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Solution for 3*cos(2x)=-1.8 equation: 


Simplifying
3cos(2x) = -1.8

Remove parenthesis around (2x)
3cos * 2x = -1.8

Reorder the terms for easier multiplication:
3 * 2cos * x = -1.8

Multiply 3 * 2
6cos * x = -1.8

Multiply cos * x
6cosx = -1.8

Solving
6cosx = -1.8

Solving for variable 'c'.

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

Divide each side by '6osx'.
c = -0.3o-1s-1x-1

Simplifying
c = -0.3o-1s-1x-1

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