7(cos(x)+cos(2x))=0

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Solution for 7(cos(x)+cos(2x))=0 equation:


Simplifying
7(cos(x) + cos(2x)) = 0

Multiply cos * x
7(cosx + cos(2x)) = 0

Remove parenthesis around (2x)
7(cosx + cos * 2x) = 0

Reorder the terms for easier multiplication:
7(cosx + 2cos * x) = 0

Multiply cos * x
7(cosx + 2cosx) = 0

Combine like terms: cosx + 2cosx = 3cosx
7(3cosx) = 0

Remove parenthesis around (3cosx)
7 * 3cosx = 0

Multiply 7 * 3
21cosx = 0

Solving
21cosx = 0

Solving for variable 'c'.

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

Divide each side by '21'.
cosx = 0

Simplifying
cosx = 0

The solution to this equation could not be determined.

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