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Simplifying cos2(x) + -1sin2(x) = 0 Multiply cos2 * x cos2x + -1sin2(x) = 0 Multiply in2s * x cos2x + -1in2sx = 0 Solving cos2x + -1in2sx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add 'in2sx' to each side of the equation. cos2x + -1in2sx + in2sx = 0 + in2sx Combine like terms: -1in2sx + in2sx = 0 cos2x + 0 = 0 + in2sx cos2x = 0 + in2sx Remove the zero: cos2x = in2sx Divide each side by 'os2x'. c = in2o-1s-1 Simplifying c = in2o-1s-1
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