Solve the differential equation : sec...

Solve the differential equation :
`sec^(2)x tan y dx + sec^(2) y tan x dy = 0`

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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