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Simplifying 4cos(7x) + -4sin(14x) = 0 Remove parenthesis around (7x) 4cos * 7x + -4sin(14x) = 0 Reorder the terms for easier multiplication: 4 * 7cos * x + -4sin(14x) = 0 Multiply 4 * 7 28cos * x + -4sin(14x) = 0 Multiply cos * x 28cosx + -4sin(14x) = 0 Remove parenthesis around (14x) 28cosx + -4ins * 14x = 0 Reorder the terms for easier multiplication: 28cosx + -4 * 14ins * x = 0 Multiply -4 * 14 28cosx + -56ins * x = 0 Multiply ins * x 28cosx + -56insx = 0 Solving 28cosx + -56insx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '56insx' to each side of the equation. 28cosx + -56insx + 56insx = 0 + 56insx Combine like terms: -56insx + 56insx = 0 28cosx + 0 = 0 + 56insx 28cosx = 0 + 56insx Remove the zero: 28cosx = 56insx Divide each side by '28osx'. c = 2ino-1 Simplifying c = 2ino-1
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