Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Trigonometry Inverse Trigonometric Functions
Number of solution of tan-1(x - 1) + tan-1(x + 1) = tan-12x, where x2 - 2 < 0
1
1
2
2
3
3
4
More than one of the above
5
None of the above