SOLUTION: Verify the identity. (cos(x) - cos(y))/(sin(x) + sin(y)) + (sin(x) - sin(y))/(cos(x) + cos(y)) = 0

SOLUTION: Verify the identity. (cos(x) - cos(y))/(sin(x) + sin(y)) + (sin(x) - sin(y))/(cos(x) + cos(y)) = 0

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Question 140847: Verify the identity.
(cos(x) - cos(y))/(sin(x) + sin(y)) + (sin(x) - sin(y))/(cos(x) + cos(y)) = 0
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

LCD is just the product of the denominators, so:

(Difference of 2 squares)

(because )

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