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 =
tan x =
tan x= - tan(
) (
)=
)
(
))
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 =
tan x =
tan x= - tan() ()=)
())
x =