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Simplifying sin(x) * cos2(2x) = -1sin(x) Remove parenthesis around (2x) ins * x * cos2 * 2x = -1sin(x) Reorder the terms for easier multiplication: 2ins * x * cos2 * x = -1sin(x) Multiply ins * x 2insx * cos2 * x = -1sin(x) Multiply insx * cos2 2cinos3x * x = -1sin(x) Multiply cinos3x * x 2cinos3x2 = -1sin(x) Multiply ins * x 2cinos3x2 = -1insx Solving 2cinos3x2 = -1insx Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '2inos3x2'. c = -0.5o-1s-2x-1 Simplifying c = -0.5o-1s-2x-1
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