Mathematics · 2018
JEE Main · 15 April 2018, Shift 1 · Q84
An angle between the plane, x+y+z=5 and the line of intersection of the planes, 3 x+4 y+z-1=0 and 5 x+8 y+2 z+14=0, is:
An angle between the plane, $\displaystyle x+y+z=5$ and the line of intersection of the planes, $\displaystyle 3 x+4 y+z-1=0$ and $\displaystyle 5 x+8 y+2 z+14=0$, is :
Official answer
(1)
$\displaystyle \sin ^{-1}(\sqrt{3 / 17})$
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JEE Main 2018 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.