Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Trigonometry Trigonometric Functions
If cot A ⋅ cot B = 2, then what is the value of cos (A + B) ⋅ sec (A - B) ?
1
1 / 3
2
2 / 3
3
1
4
More than one of the above
5
None of the above