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Simplifying Sin(8x + -18) = cos(5x + 4) Reorder the terms: inS(-18 + 8x) = cos(5x + 4) (-18 * inS + 8x * inS) = cos(5x + 4) (-18inS + 8inxS) = cos(5x + 4) Reorder the terms: -18inS + 8inxS = cos(4 + 5x) -18inS + 8inxS = (4 * cos + 5x * cos) -18inS + 8inxS = (4cos + 5cosx) Solving -18inS + 8inxS = 4cos + 5cosx Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Reorder the terms: -4cos + -5cosx + -18inS + 8inxS = 4cos + 5cosx + -4cos + -5cosx Reorder the terms: -4cos + -5cosx + -18inS + 8inxS = 4cos + -4cos + 5cosx + -5cosx Combine like terms: 4cos + -4cos = 0 -4cos + -5cosx + -18inS + 8inxS = 0 + 5cosx + -5cosx -4cos + -5cosx + -18inS + 8inxS = 5cosx + -5cosx Combine like terms: 5cosx + -5cosx = 0 -4cos + -5cosx + -18inS + 8inxS = 0 The solution to this equation could not be determined.
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