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Simplifying cos(3x) + -1cos(5x) + cos(10x) = 0 Remove parenthesis around (3x) cos * 3x + -1cos(5x) + cos(10x) = 0 Reorder the terms for easier multiplication: 3cos * x + -1cos(5x) + cos(10x) = 0 Multiply cos * x 3cosx + -1cos(5x) + cos(10x) = 0 Remove parenthesis around (5x) 3cosx + -1cos * 5x + cos(10x) = 0 Reorder the terms for easier multiplication: 3cosx + -1 * 5cos * x + cos(10x) = 0 Multiply -1 * 5 3cosx + -5cos * x + cos(10x) = 0 Multiply cos * x 3cosx + -5cosx + cos(10x) = 0 Remove parenthesis around (10x) 3cosx + -5cosx + cos * 10x = 0 Reorder the terms for easier multiplication: 3cosx + -5cosx + 10cos * x = 0 Multiply cos * x 3cosx + -5cosx + 10cosx = 0 Combine like terms: 3cosx + -5cosx = -2cosx -2cosx + 10cosx = 0 Combine like terms: -2cosx + 10cosx = 8cosx 8cosx = 0 Solving 8cosx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '8'. cosx = 0 Simplifying cosx = 0 The solution to this equation could not be determined.
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