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Simplifying 0.49 = cos(4x) Remove parenthesis around (4x) 0.49 = cos * 4x Reorder the terms for easier multiplication: 0.49 = 4cos * x Multiply cos * x 0.49 = 4cosx Solving 0.49 = 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. 0.49 + -4cosx = 4cosx + -4cosx Combine like terms: 4cosx + -4cosx = 0 0.49 + -4cosx = 0 Add '-0.49' to each side of the equation. 0.49 + -0.49 + -4cosx = 0 + -0.49 Combine like terms: 0.49 + -0.49 = 0.00 0.00 + -4cosx = 0 + -0.49 -4cosx = 0 + -0.49 Combine like terms: 0 + -0.49 = -0.49 -4cosx = -0.49 Divide each side by '-4osx'. c = 0.1225o-1s-1x-1 Simplifying c = 0.1225o-1s-1x-1
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