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Simplifying (d2 + 1) = cosx Reorder the terms: (1 + d2) = cosx Remove parenthesis around (1 + d2) 1 + d2 = cosx Solving 1 + d2 = cosx Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + d2 = -1 + cosx Combine like terms: 1 + -1 = 0 0 + d2 = -1 + cosx d2 = -1 + cosx Simplifying d2 = -1 + cosx Reorder the terms: 1 + -1cosx + d2 = -1 + cosx + 1 + -1cosx Reorder the terms: 1 + -1cosx + d2 = -1 + 1 + cosx + -1cosx Combine like terms: -1 + 1 = 0 1 + -1cosx + d2 = 0 + cosx + -1cosx 1 + -1cosx + d2 = cosx + -1cosx Combine like terms: cosx + -1cosx = 0 1 + -1cosx + d2 = 0 The solution to this equation could not be determined.
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