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Simplifying cos(4x) + -1 = 2sin(x) * cos(x) Remove parenthesis around (4x) cos * 4x + -1 = 2sin(x) * cos(x) Reorder the terms for easier multiplication: 4cos * x + -1 = 2sin(x) * cos(x) Multiply cos * x 4cosx + -1 = 2sin(x) * cos(x) Reorder the terms: -1 + 4cosx = 2sin(x) * cos(x) Multiply ins * x -1 + 4cosx = 2insx * cos * x Multiply insx * cos -1 + 4cosx = 2cinos2x * x Multiply cinos2x * x -1 + 4cosx = 2cinos2x2 Solving -1 + 4cosx = 2cinos2x2 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-2cinos2x2' to each side of the equation. -1 + -2cinos2x2 + 4cosx = 2cinos2x2 + -2cinos2x2 Combine like terms: 2cinos2x2 + -2cinos2x2 = 0 -1 + -2cinos2x2 + 4cosx = 0 Add '1' to each side of the equation. -1 + -2cinos2x2 + 1 + 4cosx = 0 + 1 Reorder the terms: -1 + 1 + -2cinos2x2 + 4cosx = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -2cinos2x2 + 4cosx = 0 + 1 -2cinos2x2 + 4cosx = 0 + 1 Combine like terms: 0 + 1 = 1 -2cinos2x2 + 4cosx = 1 Reorder the terms: -1 + -2cinos2x2 + 4cosx = 1 + -1 Combine like terms: 1 + -1 = 0 -1 + -2cinos2x2 + 4cosx = 0 The solution to this equation could not be determined.
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