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Simplifying 2sin(2x) + 9cos(x) + 3 = 0 Remove parenthesis around (2x) 2ins * 2x + 9cos(x) + 3 = 0 Reorder the terms for easier multiplication: 2 * 2ins * x + 9cos(x) + 3 = 0 Multiply 2 * 2 4ins * x + 9cos(x) + 3 = 0 Multiply ins * x 4insx + 9cos(x) + 3 = 0 Multiply cos * x 4insx + 9cosx + 3 = 0 Reorder the terms: 3 + 9cosx + 4insx = 0 Solving 3 + 9cosx + 4insx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + 9cosx + -3 + 4insx = 0 + -3 Reorder the terms: 3 + -3 + 9cosx + 4insx = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 9cosx + 4insx = 0 + -3 9cosx + 4insx = 0 + -3 Combine like terms: 0 + -3 = -3 9cosx + 4insx = -3 Add '-4insx' to each side of the equation. 9cosx + 4insx + -4insx = -3 + -4insx Combine like terms: 4insx + -4insx = 0 9cosx + 0 = -3 + -4insx 9cosx = -3 + -4insx Divide each side by '9osx'. c = -0.3333333333o-1s-1x-1 + -0.4444444444ino-1 Simplifying c = -0.3333333333o-1s-1x-1 + -0.4444444444ino-1 Reorder the terms: c = -0.4444444444ino-1 + -0.3333333333o-1s-1x-1
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