Published by:
CGP EDU Academic Team
Published on: August 14, 2026
If the locus of the foot of the perpendicular drawn from centre upon any tangent to the ellipse 
is (x 2 + y 2 ) = ax 2 + by 2 , then (a- b) is equal to
Text Solution
Verified by ExpertsThe correct answer is:
D
30
Slope of OP = 
slope of the tangent is 
Hence, the equation of tangent PQ is 
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