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Simplifying COS2(3X) + -1SIN2(3X) * X = 0 Remove parenthesis around (3X) COS2 * 3X + -1SIN2(3X) * X = 0 Reorder the terms for easier multiplication: 3COS2 * X + -1SIN2(3X) * X = 0 Multiply COS2 * X 3COS2X + -1SIN2(3X) * X = 0 Remove parenthesis around (3X) 3COS2X + -1IN2S * 3X * X = 0 Reorder the terms for easier multiplication: 3COS2X + -1 * 3IN2S * X * X = 0 Multiply -1 * 3 3COS2X + -3IN2S * X * X = 0 Multiply IN2S * X 3COS2X + -3IN2SX * X = 0 Multiply IN2SX * X 3COS2X + -3IN2SX2 = 0 Solving 3COS2X + -3IN2SX2 = 0 Solving for variable 'C'. Move all terms containing C to the left, all other terms to the right. Add '3IN2SX2' to each side of the equation. 3COS2X + -3IN2SX2 + 3IN2SX2 = 0 + 3IN2SX2 Combine like terms: -3IN2SX2 + 3IN2SX2 = 0 3COS2X + 0 = 0 + 3IN2SX2 3COS2X = 0 + 3IN2SX2 Remove the zero: 3COS2X = 3IN2SX2 Divide each side by '3OS2X'. C = IN2O-1S-1X Simplifying C = IN2O-1S-1X
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