10cos(9x)=-5

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Solution for 10cos(9x)=-5 equation: 


Simplifying
10cos(9x) = -5

Remove parenthesis around (9x)
10cos * 9x = -5

Reorder the terms for easier multiplication:
10 * 9cos * x = -5

Multiply 10 * 9
90cos * x = -5

Multiply cos * x
90cosx = -5

Solving
90cosx = -5

Solving for variable 'c'.

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

Divide each side by '90osx'.
c = -0.05555555556o-1s-1x-1

Simplifying
c = -0.05555555556o-1s-1x-1

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