Mathematics · 2021
JEE Main · 26 August 2021, Shift 2 · Q70
A hall has a square floor of dimension 10 m × 10 m (see the figure) and vertical walls. If the angle GPH between the diagonals AG and BH is cos^-1…
A hall has a square floor of dimension $\displaystyle 10 \mathrm{~m} \times 10 \mathrm{~m}$ (see the figure) and vertical walls. If the angle GPH between the diagonals AG and BH is $\displaystyle \cos ^{-1} \frac{1}{5}$, then the height of the hall (in meters) is :
Official answer
(1)
$\displaystyle 5 \sqrt{2}$
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JEE Main 2021 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.