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Simplifying 2cos2(4x) = 1 Remove parenthesis around (4x) 2cos2 * 4x = 1 Reorder the terms for easier multiplication: 2 * 4cos2 * x = 1 Multiply 2 * 4 8cos2 * x = 1 Multiply cos2 * x 8cos2x = 1 Solving 8cos2x = 1 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '8os2x'. c = 0.125o-1s-2x-1 Simplifying c = 0.125o-1s-2x-1
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