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Simplifying Sin(9x + 4) = cos(6x + 20) Reorder the terms: inS(4 + 9x) = cos(6x + 20) (4 * inS + 9x * inS) = cos(6x + 20) (4inS + 9inxS) = cos(6x + 20) Reorder the terms: 4inS + 9inxS = cos(20 + 6x) 4inS + 9inxS = (20 * cos + 6x * cos) 4inS + 9inxS = (20cos + 6cosx) Solving 4inS + 9inxS = 20cos + 6cosx Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Reorder the terms: -20cos + -6cosx + 4inS + 9inxS = 20cos + 6cosx + -20cos + -6cosx Reorder the terms: -20cos + -6cosx + 4inS + 9inxS = 20cos + -20cos + 6cosx + -6cosx Combine like terms: 20cos + -20cos = 0 -20cos + -6cosx + 4inS + 9inxS = 0 + 6cosx + -6cosx -20cos + -6cosx + 4inS + 9inxS = 6cosx + -6cosx Combine like terms: 6cosx + -6cosx = 0 -20cos + -6cosx + 4inS + 9inxS = 0 The solution to this equation could not be determined.
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