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NEST2015MathematicsEllipse

Let F₁ and F₂ be the two foci of the ellipse x^2 a^2 + y^2 b^2 =1 with a b 0 . If the latus rectum through F₁ subtends 90^ at F₂ then the eccentricity of the ellipse is

Options

  1. A3-2 2
  2. B2 -1
  3. C2 2 -2
  4. D1 2

Correct answer

B. 2 -1

Step-by-step solution

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