railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If tan \(A\; = \;\frac{3}{4},\) then (1 + cos A) (1 – cos A) / (1 + sin A) (1 – sin A) = ?
1
\(\frac{{16}}{{25}}\)
2
\(\frac{9}{{\;25}}\)
3
\(\frac{{16}}{9}\)
4
\(\frac{{\;9}}{{16}}\)