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AP EAMCET · Maths · Ellipse

The points of intersection of the perpendicular tangents drawn to the ellipse 4x2+9y2=36 lie on the curve 

  1. A x2+y2=13
  2. B x2-y2=5
  3. C x+y=5
  4. D x29+y24=1
Verified Solution

Answer & Solution

Correct Answer

(A) x2+y2=13

Step-by-step Solution

Detailed explanation

Given: 4x2+9y2=36 ⇒x29+y24=1 Comparing with the standard form x2a2+y2b2=1, we get a2=9 & b2=4 Now, we know that the locus of two perpendicular tangents drawn to the ellipse is the director circle of the ellipse. Now, equation of the director circle to the…