1+2cosx=-cos(2x)

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Solution for 1+2cosx=-cos(2x) equation:


Simplifying
1 + 2cosx = -1cos(2x)

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

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

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

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

Solving
1 + 2cosx = -2cosx

Solving for variable 'c'.

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

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

Combine like terms: 2cosx + 2cosx = 4cosx
1 + 4cosx = -2cosx + 2cosx

Combine like terms: -2cosx + 2cosx = 0
1 + 4cosx = 0

Add '-1' to each side of the equation.
1 + -1 + 4cosx = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 4cosx = 0 + -1
4cosx = 0 + -1

Combine like terms: 0 + -1 = -1
4cosx = -1

Divide each side by '4osx'.
c = -0.25o-1s-1x-1

Simplifying
c = -0.25o-1s-1x-1

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