MCQ
$\frac{d}{d x}\left[\log \sqrt{\frac{1-\cos x}{1+\cos x}}\right]=$
- A$\sec x$
- ✓$\operatorname{cosec} x$
- C$\operatorname{cosec} \frac{x}{2}$
- D$\sec \frac{x}{2}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.