Question

if the points a(4,3)and b(2,y) are lie on the circle with center o(2,3) find y

Answer 1

r=√(4-2)^2 +(3-3)^2
=2
therefore
(2-2)^2+(y-3)^2=2^2
solving this we get
y=1;5

Answer 2

Answer:

OA= RADIUS=√(4-2)^2 +(3-3)^2

=2

OB =OA as it is also the radius  

therefore

(2-2)^2+(y-3)^2=2^2

solving this we get

y=1;5