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Simplifying 3cos(x) = 3cos(2x) Multiply cos * x 3cosx = 3cos(2x) Remove parenthesis around (2x) 3cosx = 3cos * 2x Reorder the terms for easier multiplication: 3cosx = 3 * 2cos * x Multiply 3 * 2 3cosx = 6cos * x Multiply cos * x 3cosx = 6cosx Solving 3cosx = 6cosx Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-6cosx' to each side of the equation. 3cosx + -6cosx = 6cosx + -6cosx Combine like terms: 3cosx + -6cosx = -3cosx -3cosx = 6cosx + -6cosx Combine like terms: 6cosx + -6cosx = 0 -3cosx = 0 Divide each side by '-3'. cosx = 0 Simplifying cosx = 0 The solution to this equation could not be determined.
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