cos(2x)-8=0

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Solution for cos(2x)-8=0 equation:


Simplifying
cos(2x) + -8 = 0

Remove parenthesis around (2x)
cos * 2x + -8 = 0

Reorder the terms for easier multiplication:
2cos * x + -8 = 0

Multiply cos * x
2cosx + -8 = 0

Reorder the terms:
-8 + 2cosx = 0

Solving
-8 + 2cosx = 0

Solving for variable 'c'.

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

Add '8' to each side of the equation.
-8 + 8 + 2cosx = 0 + 8

Combine like terms: -8 + 8 = 0
0 + 2cosx = 0 + 8
2cosx = 0 + 8

Combine like terms: 0 + 8 = 8
2cosx = 8

Divide each side by '2osx'.
c = 4o-1s-1x-1

Simplifying
c = 4o-1s-1x-1

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