Here using Equations of bisectors of angle between the lines we will get co-ordinate of centre of circle i.e O. and as OA = OP we can obtain required equation of circle. consider O is the center of circle.
and Let A and B denote the respective points of contact
Equations of bisectors of angle between the lines are;
Since O lies on one of these bisectors and x-coordinate of O is less then or equal to 8,