cos(9x)-cos(7x)=

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Solution for cos(9x)-cos(7x)= equation:


Simplifying
cos(9x) + -1cos(7x) = 0

Remove parenthesis around (9x)
cos * 9x + -1cos(7x) = 0

Reorder the terms for easier multiplication:
9cos * x + -1cos(7x) = 0

Multiply cos * x
9cosx + -1cos(7x) = 0

Remove parenthesis around (7x)
9cosx + -1cos * 7x = 0

Reorder the terms for easier multiplication:
9cosx + -1 * 7cos * x = 0

Multiply -1 * 7
9cosx + -7cos * x = 0

Multiply cos * x
9cosx + -7cosx = 0

Combine like terms: 9cosx + -7cosx = 2cosx
2cosx = 0

Solving
2cosx = 0

Solving for variable 'c'.

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

Divide each side by '2'.
cosx = 0

Simplifying
cosx = 0

The solution to this equation could not be determined.

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