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Simplifying cos2(6x) + -1sin2(6x) = 0 Remove parenthesis around (6x) cos2 * 6x + -1sin2(6x) = 0 Reorder the terms for easier multiplication: 6cos2 * x + -1sin2(6x) = 0 Multiply cos2 * x 6cos2x + -1sin2(6x) = 0 Remove parenthesis around (6x) 6cos2x + -1in2s * 6x = 0 Reorder the terms for easier multiplication: 6cos2x + -1 * 6in2s * x = 0 Multiply -1 * 6 6cos2x + -6in2s * x = 0 Multiply in2s * x 6cos2x + -6in2sx = 0 Solving 6cos2x + -6in2sx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '6in2sx' to each side of the equation. 6cos2x + -6in2sx + 6in2sx = 0 + 6in2sx Combine like terms: -6in2sx + 6in2sx = 0 6cos2x + 0 = 0 + 6in2sx 6cos2x = 0 + 6in2sx Remove the zero: 6cos2x = 6in2sx Divide each side by '6os2x'. c = in2o-1s-1 Simplifying c = in2o-1s-1
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