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Simplifying (sinx + -1cosx)(cosx + -1sinx) = -1.8666 Reorder the terms: (-1cosx + insx)(cosx + -1sinx) = -1.8666 Multiply (-1cosx + insx) * (cosx + -1insx) (-1cosx * (cosx + -1insx) + insx(cosx + -1insx)) = -1.8666 ((cosx * -1cosx + -1insx * -1cosx) + insx(cosx + -1insx)) = -1.8666 Reorder the terms: ((1cinos2x2 + -1c2o2s2x2) + insx(cosx + -1insx)) = -1.8666 ((1cinos2x2 + -1c2o2s2x2) + insx(cosx + -1insx)) = -1.8666 (1cinos2x2 + -1c2o2s2x2 + (cosx * insx + -1insx * insx)) = -1.8666 (1cinos2x2 + -1c2o2s2x2 + (cinos2x2 + -1i2n2s2x2)) = -1.8666 Reorder the terms: (1cinos2x2 + cinos2x2 + -1c2o2s2x2 + -1i2n2s2x2) = -1.8666 Combine like terms: 1cinos2x2 + cinos2x2 = 2cinos2x2 (2cinos2x2 + -1c2o2s2x2 + -1i2n2s2x2) = -1.8666 Solving 2cinos2x2 + -1c2o2s2x2 + -1i2n2s2x2 = -1.8666 Solving for variable 'c'. Reorder the terms: 1.8666 + 2cinos2x2 + -1c2o2s2x2 + -1i2n2s2x2 = -1.8666 + 1.8666 Combine like terms: -1.8666 + 1.8666 = 0.0000 1.8666 + 2cinos2x2 + -1c2o2s2x2 + -1i2n2s2x2 = 0.0000 The solution to this equation could not be determined.
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