cos(2x)+7cosx=3

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Solution for cos(2x)+7cosx=3 equation: 


Simplifying
cos(2x) + 7cosx = 3

Remove parenthesis around (2x)
cos * 2x + 7cosx = 3

Reorder the terms for easier multiplication:
2cos * x + 7cosx = 3

Multiply cos * x
2cosx + 7cosx = 3

Combine like terms: 2cosx + 7cosx = 9cosx
9cosx = 3

Solving
9cosx = 3

Solving for variable 'c'.

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

Divide each side by '9osx'.
c = 0.3333333333o-1s-1x-1

Simplifying
c = 0.3333333333o-1s-1x-1

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