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Simplifying
cos(2x) * cos(3x) = 0.5
Remove parenthesis around (2x)
cos * 2x * cos(3x) = 0.5
Remove parenthesis around (3x)
cos * 2x * cos * 3x = 0.5
Reorder the terms for easier multiplication:
2 * 3cos * x * cos * x = 0.5
Multiply 2 * 3
6cos * x * cos * x = 0.5
Multiply cos * x
6cosx * cos * x = 0.5
Multiply cosx * cos
6c2o2s2x * x = 0.5
Multiply c2o2s2x * x
6c2o2s2x2 = 0.5
Solving
6c2o2s2x2 = 0.5
Solving for variable 'c'.
Move all terms containing c to the left, all other terms to the right.
Divide each side by '6o2s2x2'.
c2 = 0.08333333333o-2s-2x-2
Simplifying
c2 = 0.08333333333o-2s-2x-2
Take the square root of each side:
c = {-0.288675135o-1s-1x-1, 0.288675135o-1s-1x-1}
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