Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Trigonometry Inverse Trigonometric Functions
If tan−1x + tan−1y = \(\frac{\pi}{4}\), then what is the value of x + y + xy?
1
0
2
1
3
−1
4
More than one of the above
5
None of the above