Mathematics · 2019
JEE Main · 12 January 2019, Shift 2 · Q81
Let S and S^′ be the foci of an ellipse and B be any one of the extremities of its minor axis. If Δ S^′ BS is a right angled triangle with right…
Let $\displaystyle S$ and $\displaystyle S^{\prime}$ be the foci of an ellipse and $\displaystyle B$ be any one of the extremities of its minor axis. If $\displaystyle \Delta \mathrm{S}^{\prime} \mathrm{BS}$ is a right angled triangle with right angle at B and area $\displaystyle \left(\Delta S^{\prime} \mathrm{BS}\right)=8 \mathrm{sq}$. units, then the length of a latus rectum of the ellipse is :
Official answer
(4)
$\displaystyle 4$
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JEE Main 2019 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.