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 =
cos x=
cos x=cos(
) (
)
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 =
cos x=
cos x=cos() ()
x =