In a \[\Delta ABC,\]\[2a\sin \,\,\left( \frac{A-B+C}{2} \right)\] is equal to [IIT Screening 2000]

\[{{b}^{2}}-{{c}^{2}}-{{a}^{2}}\]

\[{{a}^{2}}+{{b}^{2}}-{{c}^{2}}\]

\[{{c}^{2}}+{{a}^{2}}-{{b}^{2}}\]

\[{{c}^{2}}-{{a}^{2}}-{{b}^{2}}\]

In a \[\Delta ABC,\]\[2a\sin \,\,\left( \frac{A-B+C}{2} \right)\] is e

1.	In a \[\Delta ABC,\]\[2a\sin \,\,\left( \frac{A-B+C}{2} \right)\] is equal to [IIT Screening 2000]
A.	\[{{a}^{2}}+{{b}^{2}}-{{c}^{2}}\]
B.	\[{{c}^{2}}+{{a}^{2}}-{{b}^{2}}\]
C.	\[{{b}^{2}}-{{c}^{2}}-{{a}^{2}}\]
D.	\[{{c}^{2}}-{{a}^{2}}-{{b}^{2}}\]
Answer» C. \[{{b}^{2}}-{{c}^{2}}-{{a}^{2}}\]

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In a \[\Delta ABC,\]\[2a\sin \,\,\left( \frac{A-B+C}{2} \right)\] is equal to [IIT Screening 2000]

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