railway RRB Technician Grade 3 Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
\(\rm \sqrt {\frac{{1 + \cos \theta }}{{1 - \cos \theta }}} + \sqrt {\frac{{1 - \cos \theta }}{{1 + \cos \theta }}} \) = .
1
2 sin θ
2
2 cos θ
3
2 cosec θ
4
2 sec θ