TS EAMCET · Maths · Ellipse
If the focus of an ellipse is \((-1,-1)\), equation of its directrix corresponding to this focus is \(x+y+1=0\) and its eccentricity is \(\frac{1}{\sqrt{2}}\), then the length of its major axis is
- A \(2\)
- B \(1\)
- C \(4\)
- D \(3\)
Answer & Solution
Correct Answer
(A) \(2\)
Step-by-step Solution
Detailed explanation
Let the length of major axis be \(2 a\). \(\perp\) Distance of focus from directrix is…
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