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Simplifying -1cos(x) = cos(x) Multiply cos * x -1cosx = cos(x) Multiply cos * x -1cosx = cosx Solving -1cosx = 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. -1cosx + -1cosx = cosx + -1cosx Combine like terms: -1cosx + -1cosx = -2cosx -2cosx = cosx + -1cosx Combine like terms: cosx + -1cosx = 0 -2cosx = 0 Divide each side by '-2'. cosx = 0 Simplifying cosx = 0 The solution to this equation could not be determined.
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