other govt exam DRDO CEPTAM Admin & Allied (A&A) 2022 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
For any real values of θ, \(\sqrt {\frac{{\sec \theta - 1}}{{\sec \theta + 1}}} = ?\)
1
cotθ – cosecθ
2
secθ – tanθ
3
cosecθ – cotθ
4
tanθ – secθ