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Simplifying 3cos(2x) + -1(3 * 0.5) = 0 Remove parenthesis around (2x) 3cos * 2x + -1(3 * 0.5) = 0 Reorder the terms for easier multiplication: 3 * 2cos * x + -1(3 * 0.5) = 0 Multiply 3 * 2 6cos * x + -1(3 * 0.5) = 0 Multiply cos * x 6cosx + -1(3 * 0.5) = 0 Multiply 3 * 0.5 6cosx + -1(1.5) = 0 Multiply -1 * 1.5 6cosx + -1.5 = 0 Reorder the terms: -1.5 + 6cosx = 0 Solving -1.5 + 6cosx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + 6cosx = 0 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + 6cosx = 0 + 1.5 6cosx = 0 + 1.5 Combine like terms: 0 + 1.5 = 1.5 6cosx = 1.5 Divide each side by '6osx'. c = 0.25o-1s-1x-1 Simplifying c = 0.25o-1s-1x-1
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