Mark the tick against the correct answer in the following:
(tan-1 2 + tan-1 3) = ?
To Find: The value of 
+
Since we know that 
+ 
= 
+
= 
=
= 
Since the principle value of tan lies in the range [0,
]
=
1
Mark the tick against the correct answer in the following:
(tan-1 2 + tan-1 3) = ?
To Find: The value of +
Since we know that + =
+ =
=
=
Since the principle value of tan lies in the range [0,]
=