4cos(x)=4cos(2x)

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Solution for 4cos(x)=4cos(2x) equation:


Simplifying
4cos(x) = 4cos(2x)

Multiply cos * x
4cosx = 4cos(2x)

Remove parenthesis around (2x)
4cosx = 4cos * 2x

Reorder the terms for easier multiplication:
4cosx = 4 * 2cos * x

Multiply 4 * 2
4cosx = 8cos * x

Multiply cos * x
4cosx = 8cosx

Solving
4cosx = 8cosx

Solving for variable 'c'.

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

Add '-8cosx' to each side of the equation.
4cosx + -8cosx = 8cosx + -8cosx

Combine like terms: 4cosx + -8cosx = -4cosx
-4cosx = 8cosx + -8cosx

Combine like terms: 8cosx + -8cosx = 0
-4cosx = 0

Divide each side by '-4'.
cosx = 0

Simplifying
cosx = 0

The solution to this equation could not be determined.

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