In given figure C1 and C2 are two circles and points P1,P2,P3,P4,P5 are noted. how many tangents are possible from P1 to C1
If a circle and the rectangular hyperbola xy=c2 meet in the four points whose parameters are p1,p2,p3 and p4, then the center of the circle through the points p1,p2 and p3 is