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AP EAMCET2016MathematicsEllipse

The distance between the focii of the ellipse x=3 , y=4 is

Options

  1. A2 7
  2. B7 2
  3. C7
  4. D3 7

Correct answer

A. 2 7

Step-by-step solution

Given that, x=3 x 3 = and y=4 y 4 = On squaring and adding eqs. (i) and (ii) we get aligned & ( x 3 )^2+ ( y 4 )^2= ^2 + ^2 & x^2 9 + y^2 16 =1 aligned Distance between their foci, f₁ f₂=2 b^2-a^2 =2 16-9 =2 7

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