JEE Main 202429 Jan, Evening shiftMathematicsMediumThree Dimensional Geometry249× since 2002Let P(3,2,3),Q(4,6,2)\mathrm{P}(3,2,3), \mathrm{Q}(4,6,2)P(3,2,3),Q(4,6,2) and R(7,3,2)\mathrm{R}(7,3,2)R(7,3,2) be the vertices of △PQR\triangle \mathrm{PQR}△PQR. Then, the angle ∠QPR\angle \mathrm{QPR}∠QPR isAOption A. cos−1(718)\cos ^{-1}\left(\frac{7}{18}\right)cos−1(187)BOption B. π6\frac{\pi}{6}6πCOption C. cos−1(118)\cos ^{-1}\left(\frac{1}{18}\right)cos−1(181)DOption D. π3\frac{\pi}{3}3πCheckSkip · show solution
