" The value of "int_(7 pi/4)^(7 pi/3)sqrt(tan^(2)x)dx" is "

The integral int_(7pi//4)^(7pi//3) sqrt(tan^(2)x)dx is equal to :

The value of [int_(-pi)^(pi) sqrt((|sinx|)/(1+tan^(2)x))dx] is (where [.] is greates integer).

The value of int_(-2 pi)^(5 pi)cot^(-1)(tan x)dx is equal to (7 pi)/(2)(b)(7 pi^(2))/(2)(c)(3 pi)/(2) (d) None of these

The value of int_(0)^(pi//2)(dx)/(1+tan^(3)x) is

The value of int_(0)^(pi//2)(dx)/(1+tan^(3)x) is

The value of int_(0)^(pi//2)(dx)/(1+tan^(3)x) is