1.

The triangle PQR is inscribed in the circle \[{{x}^{2}}+{{y}^{2}}=25\]. If Q and R have co-ordinates (3,4) and (? 4, 3) respectively, then \[\angle QPR\] is equal to                                  [IIT Screening 2000]

A. \[\frac{\pi }{2}\]
B. \[\frac{\pi }{3}\]
C. \[\frac{\pi }{4}\]
D. \[\frac{\pi }{6}\]
Answer» D. \[\frac{\pi }{6}\]


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