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Simplifying 2 + -4cos(3x) = 0 Remove parenthesis around (3x) 2 + -4cos * 3x = 0 Reorder the terms for easier multiplication: 2 + -4 * 3cos * x = 0 Multiply -4 * 3 2 + -12cos * x = 0 Multiply cos * x 2 + -12cosx = 0 Solving 2 + -12cosx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -12cosx = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -12cosx = 0 + -2 -12cosx = 0 + -2 Combine like terms: 0 + -2 = -2 -12cosx = -2 Divide each side by '-12osx'. c = 0.1666666667o-1s-1x-1 Simplifying c = 0.1666666667o-1s-1x-1
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