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Simplifying 5cos2(3x) = 0 Remove parenthesis around (3x) 5cos2 * 3x = 0 Reorder the terms for easier multiplication: 5 * 3cos2 * x = 0 Multiply 5 * 3 15cos2 * x = 0 Multiply cos2 * x 15cos2x = 0 Solving 15cos2x = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '15'. cos2x = 0 Simplifying cos2x = 0 The solution to this equation could not be determined.
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