The sum of the squares of perpendicular on any tangent of the ellipse x2a2+y2b2 = 1 from two points on the minor axis is
a2
b2
2a2
2b2
PA2+QB2 = a2+a2 = 2a2
\)
The sum of the squares of perpendicular on any tangent of the ellipse x2a2+y2b2 = 1 from two Points on the minor axis each one at a distance of units from the centre is