5cos^2(3x)=4

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Solution for 5cos^2(3x)=4 equation: 


Simplifying
5cos2(3x) = 4

Remove parenthesis around (3x)
5cos2 * 3x = 4

Reorder the terms for easier multiplication:
5 * 3cos2 * x = 4

Multiply 5 * 3
15cos2 * x = 4

Multiply cos2 * x
15cos2x = 4

Solving
15cos2x = 4

Solving for variable 'c'.

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

Divide each side by '15os2x'.
c = 0.2666666667o-1s-2x-1

Simplifying
c = 0.2666666667o-1s-2x-1

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