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Simplifying cos(6A) + -2cos(4A) + -1cos(2A) + 2 = 0 Remove parenthesis around (6A) cos * 6A + -2cos(4A) + -1cos(2A) + 2 = 0 Reorder the terms for easier multiplication: 6cos * A + -2cos(4A) + -1cos(2A) + 2 = 0 Multiply cos * A 6cosA + -2cos(4A) + -1cos(2A) + 2 = 0 Remove parenthesis around (4A) 6cosA + -2cos * 4A + -1cos(2A) + 2 = 0 Reorder the terms for easier multiplication: 6cosA + -2 * 4cos * A + -1cos(2A) + 2 = 0 Multiply -2 * 4 6cosA + -8cos * A + -1cos(2A) + 2 = 0 Multiply cos * A 6cosA + -8cosA + -1cos(2A) + 2 = 0 Remove parenthesis around (2A) 6cosA + -8cosA + -1cos * 2A + 2 = 0 Reorder the terms for easier multiplication: 6cosA + -8cosA + -1 * 2cos * A + 2 = 0 Multiply -1 * 2 6cosA + -8cosA + -2cos * A + 2 = 0 Multiply cos * A 6cosA + -8cosA + -2cosA + 2 = 0 Reorder the terms: 2 + 6cosA + -8cosA + -2cosA = 0 Combine like terms: 6cosA + -8cosA = -2cosA 2 + -2cosA + -2cosA = 0 Combine like terms: -2cosA + -2cosA = -4cosA 2 + -4cosA = 0 Solving 2 + -4cosA = 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 + -4cosA = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -4cosA = 0 + -2 -4cosA = 0 + -2 Combine like terms: 0 + -2 = -2 -4cosA = -2 Divide each side by '-4osA'. c = 0.5o-1s-1A-1 Simplifying c = 0.5o-1s-1A-1
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