If P and P  denote  the length  of the  perpendicular  from  a focus  and the   centre  of
Channel: Doubtnut
Date: 2020-05-17

If P and P  denote  the length  of the  perpendicular  from  a focus  and the   centre  of an  ellipse  with  semi - major  axis  of length  a, respectively  , on  a tangent  to the  ellipse  and r  denotes  the focal  distance  of the  point  , then