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