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Simplifying 4cos2(3x) + sin2(3x) = 0 Remove parenthesis around (3x) 4cos2 * 3x + sin2(3x) = 0 Reorder the terms for easier multiplication: 4 * 3cos2 * x + sin2(3x) = 0 Multiply 4 * 3 12cos2 * x + sin2(3x) = 0 Multiply cos2 * x 12cos2x + sin2(3x) = 0 Remove parenthesis around (3x) 12cos2x + in2s * 3x = 0 Reorder the terms for easier multiplication: 12cos2x + 3in2s * x = 0 Multiply in2s * x 12cos2x + 3in2sx = 0 Solving 12cos2x + 3in2sx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-3in2sx' to each side of the equation. 12cos2x + 3in2sx + -3in2sx = 0 + -3in2sx Combine like terms: 3in2sx + -3in2sx = 0 12cos2x + 0 = 0 + -3in2sx 12cos2x = 0 + -3in2sx Remove the zero: 12cos2x = -3in2sx Divide each side by '12os2x'. c = -0.25in2o-1s-1 Simplifying c = -0.25in2o-1s-1
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