Three Dimensional Geometry: JEE Main 2019 Mathematics question

JEE Main 2019 · 12 Jan, Morning shift · Q2574

JEE Main 201912 Jan, Morning shiftMathematicsMediumThree Dimensional Geometry249× since 2002

A tetrahedron has vertices P(1, 2, 1), Q(2, 1, 3), R(–1, 1, 2) and O(0, 0, 0). The angle between the faces OPQ and PQR is :

JEE Main 2019 · 12 Jan, Morning shift · Q2574

JEE Main 201912 Jan, Morning shiftMathematicsMediumThree Dimensional Geometry249× since 2002

A tetrahedron has vertices P(1, 2, 1), Q(2, 1, 3), R(–1, 1, 2) and O(0, 0, 0). The angle between the faces OPQ and PQR is :

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