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Simplifying 2 = cos(5x) Remove parenthesis around (5x) 2 = cos * 5x Reorder the terms for easier multiplication: 2 = 5cos * x Multiply cos * x 2 = 5cosx Solving 2 = 5cosx Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-5cosx' to each side of the equation. 2 + -5cosx = 5cosx + -5cosx Combine like terms: 5cosx + -5cosx = 0 2 + -5cosx = 0 Add '-2' to each side of the equation. 2 + -2 + -5cosx = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -5cosx = 0 + -2 -5cosx = 0 + -2 Combine like terms: 0 + -2 = -2 -5cosx = -2 Divide each side by '-5osx'. c = 0.4o-1s-1x-1 Simplifying c = 0.4o-1s-1x-1
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