Ellipse
Foci and eccentricity
Grade 11
Question:
<p>If the angle between the lines joining the end points of minor axis of an ellipse with its foci is \(\frac{\pi}{2}\), then the eccentricity of the ellipse is</p>
<p>(a) \(1/2\)</p>
<p>(b) \(1/\sqrt{2}\)</p>
<p>(c) \(\sqrt{3}/2\)</p>
<p>(d) \(1/(2\sqrt{2})\)</p>
Step-by-Step Solution
Key Concept: Use the angle condition between lines joining endpoints of minor axis to the foci to establish a relationship with eccentricity.
<p>Solution not provided in text.</p>
Correct Answer: A