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