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Simplifying 0 = cos2(4x) Remove parenthesis around (4x) 0 = cos2 * 4x Reorder the terms for easier multiplication: 0 = 4cos2 * x Multiply cos2 * x 0 = 4cos2x Solving 0 = 4cos2x Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-4cos2x' to each side of the equation. 0 + -4cos2x = 4cos2x + -4cos2x Remove the zero: -4cos2x = 4cos2x + -4cos2x Combine like terms: 4cos2x + -4cos2x = 0 -4cos2x = 0 Divide each side by '-4'. cos2x = 0 Simplifying cos2x = 0 The solution to this equation could not be determined.
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