MCQ
cos 3A बराबर हैं-
- A$3 \cos A 4 \cos ^3 \mathrm{~A}$
- B$3 \cos A+4 \cos ^3 A$
- ✓$4 \cos ^3 \mathrm{~A}-3 \cos \mathrm{A}$
- Dइनमें से कोई नहीं
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.