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Simplifying cos(3x) + sen(3x) = 0 Remove parenthesis around (3x) cos * 3x + sen(3x) = 0 Reorder the terms for easier multiplication: 3cos * x + sen(3x) = 0 Multiply cos * x 3cosx + sen(3x) = 0 Remove parenthesis around (3x) 3cosx + ens * 3x = 0 Reorder the terms for easier multiplication: 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 = -1eno-1 Simplifying c = -1eno-1
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