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Simplifying cos(2x) + -1cos(6x) = sin(8x) Remove parenthesis around (2x) cos * 2x + -1cos(6x) = sin(8x) Reorder the terms for easier multiplication: 2cos * x + -1cos(6x) = sin(8x) Multiply cos * x 2cosx + -1cos(6x) = sin(8x) Remove parenthesis around (6x) 2cosx + -1cos * 6x = sin(8x) Reorder the terms for easier multiplication: 2cosx + -1 * 6cos * x = sin(8x) Multiply -1 * 6 2cosx + -6cos * x = sin(8x) Multiply cos * x 2cosx + -6cosx = sin(8x) Combine like terms: 2cosx + -6cosx = -4cosx -4cosx = sin(8x) Remove parenthesis around (8x) -4cosx = ins * 8x Reorder the terms for easier multiplication: -4cosx = 8ins * x Multiply ins * x -4cosx = 8insx Solving -4cosx = 8insx Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '-4osx'. c = -2ino-1 Simplifying c = -2ino-1
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