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Simplifying 0 = -8cos(0.5x) Remove parenthesis around (0.5x) 0 = -8cos * 0.5x Reorder the terms for easier multiplication: 0 = -8 * 0.5cos * x Multiply -8 * 0.5 0 = -4cos * x Multiply cos * x 0 = -4cosx Solving 0 = -4cosx Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '4cosx' to each side of the equation. 0 + 4cosx = -4cosx + 4cosx Remove the zero: 4cosx = -4cosx + 4cosx Combine like terms: -4cosx + 4cosx = 0 4cosx = 0 Divide each side by '4'. cosx = 0 Simplifying cosx = 0 The solution to this equation could not be determined.
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