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