railway RRB Group D Mock Test Series 2024-25 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
जर tan A = \(\frac{2}{5}\) असेल, तर \(\frac{\sec ^2 A}{\operatorname{cosec}^2 A}\) चे मूल्य शोधा.
1
\(\frac{2}{5}\)
2
\(\frac{4}{25}\)
3
\(\frac{9}{25}\)
4
\(\frac{3}{5}\)