x=cos(3y)

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Solution for x=cos(3y) equation: 


Simplifying
x = cos(3y)

Remove parenthesis around (3y)
x = cos * 3y

Reorder the terms for easier multiplication:
x = 3cos * y

Multiply cos * y
x = 3cosy

Solving
x = 3cosy

Solving for variable 'x'.

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

Simplifying
x = 3cosy

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