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If two tangents drawn to the ellipse (x^...

If two tangents drawn to the ellipse `(x^(2))/(a^(2))+(y^(2))/(b^(2))=1` intersect perpendicularly at P, then the locus of P is a circle `x^(2)+y^(2)=a^(2)+b^(2)` . The circle is called

A

circle

B

director circle

C

ellipse

D

none of these

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The correct Answer is:
B
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