A Coordinate Axis Rotation

★ 8/10solid geometry Symmetry vectors Rotation

Problem

The coordinate axes of a rectangular system $O\text{-}xyz$ are rotated about a line $l$ through $O$ so that the $Ox$ -axis maps to the $Oy$ -axis and the $Oy$ -axis maps to the $Oz$ -axis. Find the smallest positive rotation angle.

Answer

Solution

Difficulty	8/10
Topics	solid geometry, Symmetry, vectors, Rotation

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