CircleHard
Question
If tan θ1. tan θ2 = - 
then the chord joining two points θ1 & θ2 on the ellipse 
= 1 will subtend a right angle at -
then the chord joining two points θ1 & θ2 on the ellipse = 1 will subtend a right angle at -Options
A.focus
B.centre
C.end of the major axis
D.end of the minor axis
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