Mathematics · 2021
JEE Main · 25 February 2021, Shift 2 · Q79
cosec [2 cot^-1(5)+ cos^-1(4/5)] is equal to:
$\displaystyle \operatorname{cosec}\left[2 \cot ^{-1}(5)+\cos ^{-1}\left(\frac{4}{5}\right)\right]$ is equal to :
Official answer
(3)
$\displaystyle \frac{65}{56}$
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JEE Main 2021 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.