MCQ
In $\triangle ABC$, with the usual notations, if $\sin B \sin C =\frac{ bc }{ a ^2}$, then the triangle is
- AAcute angled triangle
- BEquilateral triangle
- ✓Right angled triangle
- DObtuse angled triangle
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The enzymes catalyzing reactions 1, 2, and 3 respectively in the above steps are