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Simplifying sin(4x) * cos(2x) = sin(5x) * cos(x) Remove parenthesis around (4x) ins * 4x * cos(2x) = sin(5x) * cos(x) Remove parenthesis around (2x) ins * 4x * cos * 2x = sin(5x) * cos(x) Reorder the terms for easier multiplication: 4 * 2ins * x * cos * x = sin(5x) * cos(x) Multiply 4 * 2 8ins * x * cos * x = sin(5x) * cos(x) Multiply ins * x 8insx * cos * x = sin(5x) * cos(x) Multiply insx * cos 8cinos2x * x = sin(5x) * cos(x) Multiply cinos2x * x 8cinos2x2 = sin(5x) * cos(x) Remove parenthesis around (5x) 8cinos2x2 = ins * 5x * cos(x) Reorder the terms for easier multiplication: 8cinos2x2 = 5ins * x * cos * x Multiply ins * x 8cinos2x2 = 5insx * cos * x Multiply insx * cos 8cinos2x2 = 5cinos2x * x Multiply cinos2x * x 8cinos2x2 = 5cinos2x2 Solving 8cinos2x2 = 5cinos2x2 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-5cinos2x2' to each side of the equation. 8cinos2x2 + -5cinos2x2 = 5cinos2x2 + -5cinos2x2 Combine like terms: 8cinos2x2 + -5cinos2x2 = 3cinos2x2 3cinos2x2 = 5cinos2x2 + -5cinos2x2 Combine like terms: 5cinos2x2 + -5cinos2x2 = 0 3cinos2x2 = 0 Divide each side by '3'. cinos2x2 = 0 Simplifying cinos2x2 = 0 The solution to this equation could not be determined.
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