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Simplifying 1 + -2sin2u = 2cos2u + -1 Reorder the terms: 1 + -2in2su = -1 + 2cos2u Solving 1 + -2in2su = -1 + 2cos2u Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -2in2su = -1 + -1 + 2cos2u Combine like terms: 1 + -1 = 0 0 + -2in2su = -1 + -1 + 2cos2u -2in2su = -1 + -1 + 2cos2u Combine like terms: -1 + -1 = -2 -2in2su = -2 + 2cos2u Divide each side by '-2n2su'. i = n-2s-1u-1 + -1cn-2os Simplifying i = n-2s-1u-1 + -1cn-2os Reorder the terms: i = -1cn-2os + n-2s-1u-1
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