P(2,3),r^2=4
y-3=k*(x-2)
kx-y+3-2k=0
d=|0-0+3-2k|/√(1+k^2)
d^2+(AB/2)^2=r^2
(3-2k)^2/(1+k^2)+(√14/2)^2=4
k1=1,k2=17/7
L1:x-y+1=0
L2:17x-7y-13=0
P(2,3),r^2=4
y-3=k*(x-2)
kx-y+3-2k=0
d=|0-0+3-2k|/√(1+k^2)
d^2+(AB/2)^2=r^2
(3-2k)^2/(1+k^2)+(√14/2)^2=4
k1=1,k2=17/7
L1:x-y+1=0
L2:17x-7y-13=0