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Simplifying 2cosx + -2 = -2 Reorder the terms: -2 + 2cosx = -2 Add '2' to each side of the equation. -2 + 2 + 2cosx = -2 + 2 Combine like terms: -2 + 2 = 0 0 + 2cosx = -2 + 2 2cosx = -2 + 2 Combine like terms: -2 + 2 = 0 2cosx = 0 Solving 2cosx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '2'. cosx = 0 Simplifying cosx = 0 The solution to this equation could not be determined.
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