railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
1 + 2 tan2 θ + 2 sin θ sec2 θ, 0° < θ < 90°, is equal to
1
\(\frac{1-\sin\theta}{1+\sin\theta}\)
2
\(\frac{1+\cos\theta}{1-\cos\theta}\)
3
\(\frac{1+\sin\theta}{1-\sin\theta}\)
4
\(\frac{1-\cos\theta}{1+\cos\theta}\)