6cos(x)+3cos(3x)=0

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Solution for 6cos(x)+3cos(3x)=0 equation:


Simplifying
6cos(x) + 3cos(3x) = 0

Multiply cos * x
6cosx + 3cos(3x) = 0

Remove parenthesis around (3x)
6cosx + 3cos * 3x = 0

Reorder the terms for easier multiplication:
6cosx + 3 * 3cos * x = 0

Multiply 3 * 3
6cosx + 9cos * x = 0

Multiply cos * x
6cosx + 9cosx = 0

Combine like terms: 6cosx + 9cosx = 15cosx
15cosx = 0

Solving
15cosx = 0

Solving for variable 'c'.

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

Divide each side by '15'.
cosx = 0

Simplifying
cosx = 0

The solution to this equation could not be determined.

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