3cos(x)=3cos(2x)

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


Simplifying
3cos(x) = 3cos(2x)

Multiply cos * x
3cosx = 3cos(2x)

Remove parenthesis around (2x)
3cosx = 3cos * 2x

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

Multiply 3 * 2
3cosx = 6cos * x

Multiply cos * x
3cosx = 6cosx

Solving
3cosx = 6cosx

Solving for variable 'c'.

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

Add '-6cosx' to each side of the equation.
3cosx + -6cosx = 6cosx + -6cosx

Combine like terms: 3cosx + -6cosx = -3cosx
-3cosx = 6cosx + -6cosx

Combine like terms: 6cosx + -6cosx = 0
-3cosx = 0

Divide each side by '-3'.
cosx = 0

Simplifying
cosx = 0

The solution to this equation could not be determined.

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