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Simplifying 2cos2 + -7 = -7 Reorder the terms: -7 + 2cos2 = -7 Add '7' to each side of the equation. -7 + 7 + 2cos2 = -7 + 7 Combine like terms: -7 + 7 = 0 0 + 2cos2 = -7 + 7 2cos2 = -7 + 7 Combine like terms: -7 + 7 = 0 2cos2 = 0 Solving 2cos2 = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '2'. cos2 = 0 Simplifying cos2 = 0 The solution to this equation could not be determined.
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