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Questions  

 Area of rectangle formed by the tangents drawn to the ellipse x216+y29=1 at ends of its 

 minor axis and tangents drawn to the circle x2+y2=16 where it crosses x -axis is 

a
72
b
144
c
48
d
12

detailed solution

Correct option is C

Area of rectangle formed by the tangents drawn to the(2a)(2b)=8×6=48

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Equation of the circle passing through the intersection of ellipses x2a2+y2b2=1 and x2b2+y2a2=1 is


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