Let P(3, 2, 3), Q(4, 6, 2), R(7, 3, 2) be the vertices of △ PQR.… | JEE Main 2024 Mathematics PYQ | Jeeify

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MCQEasyJEE Main 2024 · 29 January, Shift 2Coordinates in 3D

Let $P(3, 2, 3)$ , $Q(4, 6, 2)$ , $R(7, 3, 2)$ be the vertices of $\triangle PQR$ . Then, the angle $\triangle QPR$ is:

A
$\pi/6$
B
$\cos^{-1}(7/18)$
C
$\cos^{-1}(1/18)$
D
$\pi/3$

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