railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
निम्नलिखित व्यंजक को हल कीजिए-
1/(1 + sinθ) + 1/(1 - sinθ) = ?
1
1
2
2cos2θ
3
0
4
2sec2θ