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Simplifying 20 = 10(3cosx) Remove parenthesis around (3cosx) 20 = 10 * 3cosx Multiply 10 * 3 20 = 30cosx Solving 20 = 30cosx Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-30cosx' to each side of the equation. 20 + -30cosx = 30cosx + -30cosx Combine like terms: 30cosx + -30cosx = 0 20 + -30cosx = 0 Add '-20' to each side of the equation. 20 + -20 + -30cosx = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -30cosx = 0 + -20 -30cosx = 0 + -20 Combine like terms: 0 + -20 = -20 -30cosx = -20 Divide each side by '-30osx'. c = 0.6666666667o-1s-1x-1 Simplifying c = 0.6666666667o-1s-1x-1
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