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Simplifying cos2(0.5x) + -1 = cosx Remove parenthesis around (0.5x) cos2 * 0.5x + -1 = cosx Reorder the terms for easier multiplication: 0.5cos2 * x + -1 = cosx Multiply cos2 * x 0.5cos2x + -1 = cosx Reorder the terms: -1 + 0.5cos2x = cosx Solving -1 + 0.5cos2x = cosx Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-1cosx' to each side of the equation. -1 + -1cosx + 0.5cos2x = cosx + -1cosx Combine like terms: cosx + -1cosx = 0 -1 + -1cosx + 0.5cos2x = 0 Add '1' to each side of the equation. -1 + -1cosx + 1 + 0.5cos2x = 0 + 1 Reorder the terms: -1 + 1 + -1cosx + 0.5cos2x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -1cosx + 0.5cos2x = 0 + 1 -1cosx + 0.5cos2x = 0 + 1 Combine like terms: 0 + 1 = 1 -1cosx + 0.5cos2x = 1 Reorder the terms: -1 + -1cosx + 0.5cos2x = 1 + -1 Combine like terms: 1 + -1 = 0 -1 + -1cosx + 0.5cos2x = 0 The solution to this equation could not be determined.
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