Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
Simplify the following expression: \({1-\sin A\over \cos A}+{\cos A \over 1-\sin A}\)
1
2 cos A
2
2 tan A
3
2 sec A
4
More than one of the above
5
None of the above