If the distances from the origin of the centre of the three circles Ci:x2+y2−2aix=b2 (i=1,2,3 ai∈N) are in G.P. Let the length of the tengents drawn to C1,C2 & C3 from any point on the curve x+√b2−y2=0 are l1,l2 & l3 respectively, then

If the distances from the origin of the centre of the three circles Ci

1.	If the distances from the origin of the centre of the three circles Ci:x2+y2−2aix=b2 (i=1,2,3 ai∈N) are in G.P. Let the length of the tengents drawn to C1,C2 & C3 from any point on the curve x+√b2−y2=0 are l1,l2 & l3 respectively, then
Answer» If the distances from the origin of the centre of the three circles $C_{i} : x^{2} + y^{2} - 2 a_{i} x = b^{2} (i = 1, 2, 3 a_{i} \in N)$ are in G.P. Let the length of the tengents drawn to $C_{1}, C_{2} & C_{3}$ from any point on the curve $x + \sqrt{b^{2} - y^{2}} = 0$ are $l_{1}, l_{2} & l_{3}$ respectively, then