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MHT CET 2023 Mathematics question

MathematicsThree Dimensional GeometryMHT CET 2023

A tetrahedron has vertices P(2, 1, 2, 3), Q(-1, 1, 2), R(1, 2, 1) and O(0, 0, 0) then angle between the faces OPQ and PQR is

Answer: (D)

Solution

Take , , , . Normal to face OPQ: , with . Normal to face PQR: , ,

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Question ID VK-097948