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Simplifying (sinx + 1)(2cosx + -1) = 0 Reorder the terms: (1 + insx)(2cosx + -1) = 0 Reorder the terms: (1 + insx)(-1 + 2cosx) = 0 Multiply (1 + insx) * (-1 + 2cosx) (1(-1 + 2cosx) + insx(-1 + 2cosx)) = 0 ((-1 * 1 + 2cosx * 1) + insx(-1 + 2cosx)) = 0 ((-1 + 2cosx) + insx(-1 + 2cosx)) = 0 (-1 + 2cosx + (-1 * insx + 2cosx * insx)) = 0 Reorder the terms: (-1 + 2cosx + (2cinos2x2 + -1insx)) = 0 (-1 + 2cosx + (2cinos2x2 + -1insx)) = 0 Reorder the terms: (-1 + 2cinos2x2 + 2cosx + -1insx) = 0 (-1 + 2cinos2x2 + 2cosx + -1insx) = 0 Solving -1 + 2cinos2x2 + 2cosx + -1insx = 0 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 + 2cinos2x2 + 2cosx + 1 + -1insx = 0 + 1 Reorder the terms: -1 + 1 + 2cinos2x2 + 2cosx + -1insx = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 2cinos2x2 + 2cosx + -1insx = 0 + 1 2cinos2x2 + 2cosx + -1insx = 0 + 1 Combine like terms: 0 + 1 = 1 2cinos2x2 + 2cosx + -1insx = 1 Add 'insx' to each side of the equation. 2cinos2x2 + 2cosx + -1insx + insx = 1 + insx Combine like terms: -1insx + insx = 0 2cinos2x2 + 2cosx + 0 = 1 + insx 2cinos2x2 + 2cosx = 1 + insx Reorder the terms: -1 + 2cinos2x2 + 2cosx + -1insx = 1 + insx + -1 + -1insx Reorder the terms: -1 + 2cinos2x2 + 2cosx + -1insx = 1 + -1 + insx + -1insx Combine like terms: 1 + -1 = 0 -1 + 2cinos2x2 + 2cosx + -1insx = 0 + insx + -1insx -1 + 2cinos2x2 + 2cosx + -1insx = insx + -1insx Combine like terms: insx + -1insx = 0 -1 + 2cinos2x2 + 2cosx + -1insx = 0 The solution to this equation could not be determined.
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