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