MCQ
$\operatorname{cosec}\left[2 \cot ^{-1}(5)+\cos ^{-1}\left(\frac{4}{5}\right)\right]$ $=$..... .
- A$\frac{56}{33}$
- ✓$\frac{65}{56}$
- C$\frac{65}{33}$
- D$\frac{75}{56}$
$\operatorname{cosec}\left[\tan ^{-1}\left(\frac{5}{12}\right)+\tan ^{-1}\left(\frac{3}{4}\right)\right]$
$=\operatorname{cosec}\left[\tan ^{-1}\left(\frac{56}{33}\right)\right]=\frac{65}{56}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.