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Simplifying 3Cos2(x) + 5cosx + 1 = 0 Multiply os2C * x 3os2xC + 5cosx + 1 = 0 Reorder the terms: 1 + 5cosx + 3os2xC = 0 Solving 1 + 5cosx + 3os2xC = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + 5cosx + -1 + 3os2xC = 0 + -1 Reorder the terms: 1 + -1 + 5cosx + 3os2xC = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 5cosx + 3os2xC = 0 + -1 5cosx + 3os2xC = 0 + -1 Combine like terms: 0 + -1 = -1 5cosx + 3os2xC = -1 Add '-3os2xC' to each side of the equation. 5cosx + 3os2xC + -3os2xC = -1 + -3os2xC Combine like terms: 3os2xC + -3os2xC = 0 5cosx + 0 = -1 + -3os2xC 5cosx = -1 + -3os2xC Divide each side by '5osx'. c = -0.2o-1s-1x-1 + -0.6sC Simplifying c = -0.2o-1s-1x-1 + -0.6sC
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