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Simplifying cos(2x) + -1x = 0 Remove parenthesis around (2x) cos * 2x + -1x = 0 Reorder the terms for easier multiplication: 2cos * x + -1x = 0 Multiply cos * x 2cosx + -1x = 0 Solving 2cosx + -1x = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add 'x' to each side of the equation. 2cosx + -1x + x = 0 + x Combine like terms: -1x + x = 0 2cosx + 0 = 0 + x 2cosx = 0 + x Remove the zero: 2cosx = x Divide each side by '2osx'. c = 0.5o-1s-1 Simplifying c = 0.5o-1s-1
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