Q .     The solution of the differential equation ` (dy)/(dx) = sin (x + y) tan (x+y) -1` is

BITSAT 2009
A

`cosec (x + y) + tan(x + y) = x + c`

B

`x + cosec (x + y) = c`

C

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

D

`x + sec (x + y) = c`

HINT

put ` x + y =z`
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