defence exam ITBP Constable (Animal Transport) Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
निम्नलिखित को हल कीजिए:
\(\frac{1}{1 + \cos \theta} + \frac{1}{1 - \cos \theta} = ? \)
1
2cosec2θ
2
2sin2θ
3
2sec2θ
4
2tan2θ