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Simplifying cos * 3x = -1 + -1cos * 3x Reorder the terms for easier multiplication: 3cos * x = -1 + -1cos * 3x Multiply cos * x 3cosx = -1 + -1cos * 3x Reorder the terms for easier multiplication: 3cosx = -1 + -1 * 3cos * x Multiply -1 * 3 3cosx = -1 + -3cos * x Multiply cos * x 3cosx = -1 + -3cosx Solving 3cosx = -1 + -3cosx Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '3cosx' to each side of the equation. 3cosx + 3cosx = -1 + -3cosx + 3cosx Combine like terms: 3cosx + 3cosx = 6cosx 6cosx = -1 + -3cosx + 3cosx Combine like terms: -3cosx + 3cosx = 0 6cosx = -1 + 0 6cosx = -1 Divide each side by '6osx'. c = -0.1666666667o-1s-1x-1 Simplifying c = -0.1666666667o-1s-1x-1
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