cos(-x)=.7

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Solution for cos(-x)=.7 equation: 


Simplifying
cos(-1x) = 0.7

Remove parenthesis around (-1x)
cos * -1x = 0.7

Reorder the terms for easier multiplication:
-1cos * x = 0.7

Multiply cos * x
-1cosx = 0.7

Solving
-1cosx = 0.7

Solving for variable 'c'.

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

Divide each side by '-1osx'.
c = -0.7o-1s-1x-1

Simplifying
c = -0.7o-1s-1x-1

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