Book: Mathematics Part-II
Chapter: 7. Integrals
Subject: Maths - Class 12th
Q. No. 9 of Exercise 7.10
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9
The value of the integral 
is
Given: 
let 
Now, let x = sin θ ⇒ dx = cos θ d θ
when,
and when x = 1, θ = π/2
Now, let cot θ = t ⇒ - cosec2 θ d θ
when,
= 6
Correct option is: (A)
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