cos(2x)-senx=0

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Solution for cos(2x)-senx=0 equation:


Simplifying
cos(2x) + -1senx = 0

Remove parenthesis around (2x)
cos * 2x + -1senx = 0

Reorder the terms for easier multiplication:
2cos * x + -1senx = 0

Multiply cos * x
2cosx + -1senx = 0

Solving
2cosx + -1ensx = 0

Solving for variable 'c'.

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

Add 'ensx' to each side of the equation.
2cosx + -1ensx + ensx = 0 + ensx

Combine like terms: -1ensx + ensx = 0
2cosx + 0 = 0 + ensx
2cosx = 0 + ensx
Remove the zero:
2cosx = ensx

Divide each side by '2osx'.
c = 0.5eno-1

Simplifying
c = 0.5eno-1

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