railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
যদি x = a secn θ, y = b tan n θ, তাহলে:
1
\({\left( {\frac{a}{x}} \right)^{2/n}} + {\left( {\frac{b}{y}} \right)^{\frac{2 }{n}}}\) = 1
2
\({\left( {\frac{x}{a}} \right)^{2/n}} - {\left( {\frac{y}{b}} \right)^{\frac{2 }{n}}}\) = 1
3
\({\left( {\frac{a}{x}} \right)^{2/n}} - {\left( {\frac{b}{y}} \right)^{\frac{2 }{n}}}\) = 1
4
\({\left( {\frac{x}{a}} \right)^{2/n}} + {\left( {\frac{y}{b}} \right)^{\frac{2 }{n}}}\) = 1