8=.1cos(4x)

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Solution for 8=.1cos(4x) equation:


Simplifying
8 = 0.1cos(4x)

Remove parenthesis around (4x)
8 = 0.1cos * 4x

Reorder the terms for easier multiplication:
8 = 0.1 * 4cos * x

Multiply 0.1 * 4
8 = 0.4cos * x

Multiply cos * x
8 = 0.4cosx

Solving
8 = 0.4cosx

Solving for variable 'c'.

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

Add '-0.4cosx' to each side of the equation.
8 + -0.4cosx = 0.4cosx + -0.4cosx

Combine like terms: 0.4cosx + -0.4cosx = 0.0
8 + -0.4cosx = 0.0

Add '-8' to each side of the equation.
8 + -8 + -0.4cosx = 0.0 + -8

Combine like terms: 8 + -8 = 0
0 + -0.4cosx = 0.0 + -8
-0.4cosx = 0.0 + -8

Combine like terms: 0.0 + -8 = -8
-0.4cosx = -8

Divide each side by '-0.4osx'.
c = 20o-1s-1x-1

Simplifying
c = 20o-1s-1x-1

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