Find the principal value of each of the following:
We know that, for any x 
R, 
represent an angle in 
whose tangent is x.
So, 
= An angle in 
whose tangent is 
Hence, Principal value of 
is 
.
1
Find the principal value of each of the following:
We know that, for any x R, represent an angle in whose tangent is x.
So, = An angle in whose tangent is
Hence, Principal value of is .