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Simplifying 1 + cos(x) = -2sin(x) Multiply cos * x 1 + cosx = -2sin(x) Multiply ins * x 1 + cosx = -2insx Solving 1 + cosx = -2insx 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 + cosx = -1 + -2insx Combine like terms: 1 + -1 = 0 0 + cosx = -1 + -2insx cosx = -1 + -2insx Divide each side by 'osx'. c = -1o-1s-1x-1 + -2ino-1 Simplifying c = -1o-1s-1x-1 + -2ino-1 Reorder the terms: c = -2ino-1 + -1o-1s-1x-1
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