`int_(0)^(a) (1)/(sqrt(a^(2)-x^(2)))dx` का मान ज्ञात कीजिए।

Explanation

`int_(0)^(a)(1)/(sqrt(a^(2)-x^(2)))dx`
`=[sin^(-1).(x)/(a)]_(0)^(a)=sin^(-1).(a)/(a)-sin^(-1)0`
`=sin^(-1)1-0=(pi)/(2)`