0=-120cos(x)

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Solution for 0=-120cos(x) equation:


Simplifying
0 = -120cos(x)

Multiply cos * x
0 = -120cosx

Solving
0 = -120cosx

Solving for variable 'c'.

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

Add '120cosx' to each side of the equation.
0 + 120cosx = -120cosx + 120cosx
Remove the zero:
120cosx = -120cosx + 120cosx

Combine like terms: -120cosx + 120cosx = 0
120cosx = 0

Divide each side by '120'.
cosx = 0

Simplifying
cosx = 0

The solution to this equation could not be determined.

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