MCQ
In $\triangle A B C$; with usual notations, $\frac{ b \sin B - c \sin C }{\sin ( B - C )}=$
- Ac
- Ba + b + c
- ✓a
- Db
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i. Factor VIII is used in the treatment of haemophilia A.
ii. Macrophage activating factor and tumor necrosis factor are used in cancer treatment.
iii. Hepatitis B can be prevented using relaxin.
