The solution of the differential equatio...

The solution of the differential equation `sec^2x tan y dx+sec^2y tanx dy=0` is :

A

tan y tan x = c

B

`(tan y)/(tan x)=c`

C

`(tan^2x)/(tany)=c`

D

none of these

Verified by Experts

The correct Answer is:

A

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