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Simplifying cos(3x) * cos(6x) = cos(4x) * cos(7x) Remove parenthesis around (3x) cos * 3x * cos(6x) = cos(4x) * cos(7x) Remove parenthesis around (6x) cos * 3x * cos * 6x = cos(4x) * cos(7x) Reorder the terms for easier multiplication: 3 * 6cos * x * cos * x = cos(4x) * cos(7x) Multiply 3 * 6 18cos * x * cos * x = cos(4x) * cos(7x) Multiply cos * x 18cosx * cos * x = cos(4x) * cos(7x) Multiply cosx * cos 18c2o2s2x * x = cos(4x) * cos(7x) Multiply c2o2s2x * x 18c2o2s2x2 = cos(4x) * cos(7x) Remove parenthesis around (4x) 18c2o2s2x2 = cos * 4x * cos(7x) Remove parenthesis around (7x) 18c2o2s2x2 = cos * 4x * cos * 7x Reorder the terms for easier multiplication: 18c2o2s2x2 = 4 * 7cos * x * cos * x Multiply 4 * 7 18c2o2s2x2 = 28cos * x * cos * x Multiply cos * x 18c2o2s2x2 = 28cosx * cos * x Multiply cosx * cos 18c2o2s2x2 = 28c2o2s2x * x Multiply c2o2s2x * x 18c2o2s2x2 = 28c2o2s2x2 Solving 18c2o2s2x2 = 28c2o2s2x2 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-28c2o2s2x2' to each side of the equation. 18c2o2s2x2 + -28c2o2s2x2 = 28c2o2s2x2 + -28c2o2s2x2 Combine like terms: 18c2o2s2x2 + -28c2o2s2x2 = -10c2o2s2x2 -10c2o2s2x2 = 28c2o2s2x2 + -28c2o2s2x2 Combine like terms: 28c2o2s2x2 + -28c2o2s2x2 = 0 -10c2o2s2x2 = 0 Divide each side by '-10'. c2o2s2x2 = 0.0 Simplifying c2o2s2x2 = 0.0 The solution to this equation could not be determined.
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