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Simplifying 0 = cos(3x) Remove parenthesis around (3x) 0 = cos * 3x Reorder the terms for easier multiplication: 0 = 3cos * x Multiply cos * x 0 = 3cosx Solving 0 = 3cosx Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-3cosx' to each side of the equation. 0 + -3cosx = 3cosx + -3cosx Remove the zero: -3cosx = 3cosx + -3cosx Combine like terms: 3cosx + -3cosx = 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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