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Simplifying 2cos2x + -1 = 0.5 Reorder the terms: -1 + 2cos2x = 0.5 Solving -1 + 2cos2x = 0.5 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + 2cos2x = 0.5 + 1 Combine like terms: -1 + 1 = 0 0 + 2cos2x = 0.5 + 1 2cos2x = 0.5 + 1 Combine like terms: 0.5 + 1 = 1.5 2cos2x = 1.5 Divide each side by '2os2x'. c = 0.75o-1s-2x-1 Simplifying c = 0.75o-1s-2x-1
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