Mark the tick against the correct answer in the following:
The principal value of 
is
To Find: The Principle value of 
Let the principle value be given by x
Now, let x =
sec x =
sec x= - sec(
) (
)=
)
sec x=sec(
) (
))
x = 
1
Mark the tick against the correct answer in the following:
The principal value of is
To Find: The Principle value of
Let the principle value be given by x
Now, let x =
sec x =
sec x= - sec() ()=)
sec x=sec() ())
x =