# If an acute angled triangle ABC is inscribed in a circle with center at origin and B = (3,4) and C = (-4,3). Then angle A is.... (options -?

If an acute angled triangle ABC is inscribed in a circle with center at origin and B = (3,4) and C = (-4,3). Then angle A is.... (options - - - out of four only one correct) (a) pi/5 (b) pi/4 (c) pi/3 (d) pi/2..please reply...

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