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Simplifying 2cos(7x) + 1 = 2 Remove parenthesis around (7x) 2cos * 7x + 1 = 2 Reorder the terms for easier multiplication: 2 * 7cos * x + 1 = 2 Multiply 2 * 7 14cos * x + 1 = 2 Multiply cos * x 14cosx + 1 = 2 Reorder the terms: 1 + 14cosx = 2 Solving 1 + 14cosx = 2 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 14cosx = 2 + -1 Combine like terms: 1 + -1 = 0 0 + 14cosx = 2 + -1 14cosx = 2 + -1 Combine like terms: 2 + -1 = 1 14cosx = 1 Divide each side by '14osx'. c = 0.07142857143o-1s-1x-1 Simplifying c = 0.07142857143o-1s-1x-1
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