If A, B, C are angles of a triangle, then 2sin \[\frac{A}{2}\cos ec\,\frac{B}{2}\sin \frac{C}{2}-\sin A\cot \frac{B}{2}-\cos A\]is

If A, B, C are angles of a triangle, then 2sin \[\frac{A}{2}\cos ec\

1.	If A, B, C are angles of a triangle, then 2sin \[\frac{A}{2}\cos ec\,\frac{B}{2}\sin \frac{C}{2}-\sin A\cot \frac{B}{2}-\cos A\]is
A.	independent of A, B,
B.	function of A, B
C.	function of C
D.	none of these
Answer» B. function of A, B

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If A, B, C are angles of a triangle, then 2sin \[\frac{A}{2}\cos ec\,\frac{B}{2}\sin \frac{C}{2}-\sin A\cot \frac{B}{2}-\cos A\]is

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