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Simplifying cos(3x) + -1sen(3x) = 0 Remove parenthesis around (3x) cos * 3x + -1sen(3x) = 0 Reorder the terms for easier multiplication: 3cos * x + -1sen(3x) = 0 Multiply cos * x 3cosx + -1sen(3x) = 0 Remove parenthesis around (3x) 3cosx + -1ens * 3x = 0 Reorder the terms for easier multiplication: 3cosx + -1 * 3ens * x = 0 Multiply -1 * 3 3cosx + -3ens * x = 0 Multiply ens * x 3cosx + -3ensx = 0 Solving 3cosx + -3ensx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '3ensx' to each side of the equation. 3cosx + -3ensx + 3ensx = 0 + 3ensx Combine like terms: -3ensx + 3ensx = 0 3cosx + 0 = 0 + 3ensx 3cosx = 0 + 3ensx Remove the zero: 3cosx = 3ensx Divide each side by '3osx'. c = eno-1 Simplifying c = eno-1
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