SSC SSC CPO Mock Test Series 2025 (Tier I & II) (DP SI & CAPF) Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
\({\left( {1 + {\rm{tanA}}} \right)^2} + {\left( {1{\rm{\;}} - {\rm{\;tanA}}} \right)^2}\) এর সমান কত?
1
2cosec2A
2
cosec2A
3
sec2A
4
2 sec2A