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Simplifying cos(2x) + -7sinx + 8 = 0 Remove parenthesis around (2x) cos * 2x + -7sinx + 8 = 0 Reorder the terms for easier multiplication: 2cos * x + -7sinx + 8 = 0 Multiply cos * x 2cosx + -7sinx + 8 = 0 Reorder the terms: 8 + 2cosx + -7insx = 0 Solving 8 + 2cosx + -7insx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + 2cosx + -8 + -7insx = 0 + -8 Reorder the terms: 8 + -8 + 2cosx + -7insx = 0 + -8 Combine like terms: 8 + -8 = 0 0 + 2cosx + -7insx = 0 + -8 2cosx + -7insx = 0 + -8 Combine like terms: 0 + -8 = -8 2cosx + -7insx = -8 Add '7insx' to each side of the equation. 2cosx + -7insx + 7insx = -8 + 7insx Combine like terms: -7insx + 7insx = 0 2cosx + 0 = -8 + 7insx 2cosx = -8 + 7insx Divide each side by '2osx'. c = -4o-1s-1x-1 + 3.5ino-1 Simplifying c = -4o-1s-1x-1 + 3.5ino-1 Reorder the terms: c = 3.5ino-1 + -4o-1s-1x-1
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