Q .     `int (dx)/(9+16 sin^2 x) ` is equal to

UPSEE 2013
A

`1/3 tan^(-1) ((3 tan x)/5) +c`

B

`1/5 tan^(-1) ((tan x)/15) +c`

C

`1/15 tan^(-1) ((tan x)/5) +c`

D

`1/15 tan^(-1) ((5 tan x)/3) + c`

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