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Simplifying 4 = 9sin(x) * cos(x) Multiply ins * x 4 = 9insx * cos * x Multiply insx * cos 4 = 9cinos2x * x Multiply cinos2x * x 4 = 9cinos2x2 Solving 4 = 9cinos2x2 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-9cinos2x2' to each side of the equation. 4 + -9cinos2x2 = 9cinos2x2 + -9cinos2x2 Combine like terms: 9cinos2x2 + -9cinos2x2 = 0 4 + -9cinos2x2 = 0 Add '-4' to each side of the equation. 4 + -4 + -9cinos2x2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -9cinos2x2 = 0 + -4 -9cinos2x2 = 0 + -4 Combine like terms: 0 + -4 = -4 -9cinos2x2 = -4 Divide each side by '-9inos2x2'. c = 0.4444444444i-1n-1o-1s-2x-2 Simplifying c = 0.4444444444i-1n-1o-1s-2x-2
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