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Simplifying 2cos(2y) = 2cos(y) + 1 Remove parenthesis around (2y) 2cos * 2y = 2cos(y) + 1 Reorder the terms for easier multiplication: 2 * 2cos * y = 2cos(y) + 1 Multiply 2 * 2 4cos * y = 2cos(y) + 1 Multiply cos * y 4cosy = 2cos(y) + 1 Multiply cos * y 4cosy = 2cosy + 1 Reorder the terms: 4cosy = 1 + 2cosy Solving 4cosy = 1 + 2cosy Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-2cosy' to each side of the equation. 4cosy + -2cosy = 1 + 2cosy + -2cosy Combine like terms: 4cosy + -2cosy = 2cosy 2cosy = 1 + 2cosy + -2cosy Combine like terms: 2cosy + -2cosy = 0 2cosy = 1 + 0 2cosy = 1 Divide each side by '2osy'. c = 0.5o-1s-1y-1 Simplifying c = 0.5o-1s-1y-1
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