In a \[\Delta ABC,\] if \[(\sin A+\sin B+\sin C)\] \[(\sin A+\sin B-\s – McqOptions

MCQOPTIONS

1.	In a \[\Delta ABC,\] if \[(\sin A+\sin B+\sin C)\] \[(\sin A+\sin B-\sin C)\] = \[3\sin A\sin B,\]then the angle C is equal to [AMU 1999]
A.	\[\frac{\pi }{2}\]
B.	\[\frac{\pi }{3}\]
C.	\[\frac{\pi }{4}\]
D.	\[\frac{\pi }{6}\]
Answer» C. \[\frac{\pi }{4}\]

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