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Simplifying 4cos(3x) + 11cosx = 0 Remove parenthesis around (3x) 4cos * 3x + 11cosx = 0 Reorder the terms for easier multiplication: 4 * 3cos * x + 11cosx = 0 Multiply 4 * 3 12cos * x + 11cosx = 0 Multiply cos * x 12cosx + 11cosx = 0 Combine like terms: 12cosx + 11cosx = 23cosx 23cosx = 0 Solving 23cosx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '23'. cosx = 0 Simplifying cosx = 0 The solution to this equation could not be determined.
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