Given that a circle with radius 
has points 
and 
located inside it. The point is at a distance of 
and point at a distance of 
from the centre of the circle, 
. The distance between points and is equal to 
. Let 
and 
be points outside the circle which lie on the extensions of lines SA and SB, respectively, such that 
and 
. Use the radius to express the distance between the points and .
.
