The equation of the polar of point P(2,3) with respect toequation of circle x2+y2−2x−2y+1=0 is, T=0 This implies, 2x+3y−(x+2)−(y+3)+1=0 x+2y−4=0 ....(I) The equation of the line joining point P(2,3) and center ofcircle C(1,1) is, y−1=
2
1
(x−1) 2x−y−1=0 The equation of polar of point Q(
6
5
,
7
5
) with respect to circle is,
6
5
x+
7
5
y−(x+
6
5
)−(y+
7
5
)+1=0 x+2y−8=0 ....(II) So, the required distance from equation (I) and (II) is,