If and are roots of the equation . Then
Explanation for the correct option:
Step -1: Find the sum and product of roots:
For the equation , the roots of the equation are and .
Now, the sum of roots is given as: .
The sum of product of two distinct roots is given as: .
The sum of product of three distinct roots is given as: .
The product of roots is given as: .
Step- 2: Find the value of the expression:
The sum of inverse tangent functions :
.
Substitute and find its value.
Thus the value of is .
Hence, the correct option is B.