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Simplifying cos(2x) * sin(4x) = 0 Remove parenthesis around (2x) cos * 2x * sin(4x) = 0 Remove parenthesis around (4x) cos * 2x * ins * 4x = 0 Reorder the terms for easier multiplication: 2 * 4cos * x * ins * x = 0 Multiply 2 * 4 8cos * x * ins * x = 0 Multiply cos * x 8cosx * ins * x = 0 Multiply cosx * ins 8cinos2x * x = 0 Multiply cinos2x * x 8cinos2x2 = 0 Solving 8cinos2x2 = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '8'. cinos2x2 = 0 Simplifying cinos2x2 = 0 The solution to this equation could not be determined.
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