Cos(6x)+3cos(3x)=1

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Solution for Cos(6x)+3cos(3x)=1 equation: 


Simplifying
Cos(6x) + 3cos(3x) = 1

Remove parenthesis around (6x)
osC * 6x + 3cos(3x) = 1

Reorder the terms for easier multiplication:
6osC * x + 3cos(3x) = 1

Multiply osC * x
6osxC + 3cos(3x) = 1

Remove parenthesis around (3x)
6osxC + 3cos * 3x = 1

Reorder the terms for easier multiplication:
6osxC + 3 * 3cos * x = 1

Multiply 3 * 3
6osxC + 9cos * x = 1

Multiply cos * x
6osxC + 9cosx = 1

Reorder the terms:
9cosx + 6osxC = 1

Solving
9cosx + 6osxC = 1

Solving for variable 'c'.

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

Add '-6osxC' to each side of the equation.
9cosx + 6osxC + -6osxC = 1 + -6osxC

Combine like terms: 6osxC + -6osxC = 0
9cosx + 0 = 1 + -6osxC
9cosx = 1 + -6osxC

Divide each side by '9osx'.
c = 0.1111111111o-1s-1x-1 + -0.6666666667C

Simplifying
c = 0.1111111111o-1s-1x-1 + -0.6666666667C

Reorder the terms:
c = -0.6666666667C + 0.1111111111o-1s-1x-1

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