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Simplifying cos(x) = 0.5cos(0.5x) Multiply cos * x cosx = 0.5cos(0.5x) Remove parenthesis around (0.5x) cosx = 0.5cos * 0.5x Reorder the terms for easier multiplication: cosx = 0.5 * 0.5cos * x Multiply 0.5 * 0.5 cosx = 0.25cos * x Multiply cos * x cosx = 0.25cosx Solving cosx = 0.25cosx Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-0.25cosx' to each side of the equation. cosx + -0.25cosx = 0.25cosx + -0.25cosx Combine like terms: cosx + -0.25cosx = 0.75cosx 0.75cosx = 0.25cosx + -0.25cosx Combine like terms: 0.25cosx + -0.25cosx = 0.00 0.75cosx = 0.00 Divide each side by '0.75'. cosx = 0 Simplifying cosx = 0 The solution to this equation could not be determined.
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