cos*x+cos*2x+cos*3x=0

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Solution for cos*x+cos*2x+cos*3x=0 equation:


Simplifying
cos * x + cos * 2x + cos * 3x = 0

Multiply cos * x
cosx + cos * 2x + cos * 3x = 0

Reorder the terms for easier multiplication:
cosx + 2cos * x + cos * 3x = 0

Multiply cos * x
cosx + 2cosx + cos * 3x = 0

Reorder the terms for easier multiplication:
cosx + 2cosx + 3cos * x = 0

Multiply cos * x
cosx + 2cosx + 3cosx = 0

Combine like terms: cosx + 2cosx = 3cosx
3cosx + 3cosx = 0

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

Solving
6cosx = 0

Solving for variable 'c'.

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

Divide each side by '6'.
cosx = 0

Simplifying
cosx = 0

The solution to this equation could not be determined.

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