The-tangent-at-P-to-an-ellipse-meet-diretrix-at-Q-prove-that-the-line-joining-the-corresponding-focus-to-P-and-Q-are-perpendicular-

Question Number 43919 by peter frank last updated on 17/Sep/18

T h e t a n g e n t a t P t o a n e l l i p s e m e e t

d i r e t r i x a t Q . p r o v e t h a t t h e l i n e j o i n i n g

t h e c o r r e s p o n d i n g f o c u s t o P a n d Q a r e p e r p e n d i c u l a r