Question

Question #01e8b

Answer 1

`sec(sin^-1(-1/5))`

`=sec(cos^-1sqrt(1-(-1/5)^2)`

`=sec(cos^-1sqrt(1-1/25))`

`=sec(cos^-1sqrt(24/25))`

`=sec(sec^-1sqrt(25/24))`

`=sqrt(25/24)=5/sqrt24`