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