cos(2x)+cos(x)=0.5

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Solution for cos(2x)+cos(x)=0.5 equation: 


Simplifying
cos(2x) + cos(x) = 0.5

Remove parenthesis around (2x)
cos * 2x + cos(x) = 0.5

Reorder the terms for easier multiplication:
2cos * x + cos(x) = 0.5

Multiply cos * x
2cosx + cos(x) = 0.5

Multiply cos * x
2cosx + cosx = 0.5

Combine like terms: 2cosx + cosx = 3cosx
3cosx = 0.5

Solving
3cosx = 0.5

Solving for variable 'c'.

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

Divide each side by '3osx'.
c = 0.1666666667o-1s-1x-1

Simplifying
c = 0.1666666667o-1s-1x-1

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