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Mathematics 19 Online
OpenStudy (anonymous):

Sin 2x - Sin 2y / Cos 2y - cos 2x = Cot (x+y)

OpenStudy (anonymous):

i got the final answer but it has -ve sign !

OpenStudy (anonymous):

Can you show your work ??

OpenStudy (anonymous):

sure !

OpenStudy (anonymous):

Just convert everything to tan form and you'll have your answer. Its positive alright.

OpenStudy (anonymous):

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