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Simplifying cos(3x) = 0.5 Remove parenthesis around (3x) cos * 3x = 0.5 Reorder the terms for easier multiplication: 3cos * x = 0.5 Multiply cos * x 3cosx = 0.5 Solving 3cosx = 0.5 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '3osx'. c = 0.1666666667o^{-1}s^{-1}x^{-1}Simplifying c = 0.1666666667o^{-1}s^{-1}x^{-1}

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