Mathematics · 2021
JEE Main · 31 August 2021, Shift 1 · Q79
A vertical pole fixed to the horizontal ground is divided in the ratio 3: 7 by a mark on it with lower part shorter than the upper part. If the two…
A vertical pole fixed to the horizontal ground is divided in the ratio $\displaystyle 3$ : $\displaystyle 7$ by a mark on it with lower part shorter than the upper part. If the two parts subtend equal angles at a point on the ground $\displaystyle 18$ m away from the base of the pole, then the height of the pole (in meters) is :
Official answer
(1)
$\displaystyle 12 \sqrt{10}$
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JEE Main 2021 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.