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