Final answer:
The OY axis describes how a part tilts or spins around the X axis.
Explanation:
The axis that describes how a part tilts or spins around the X axis is the OY axis. When rotating around the X axis, the movement is in the vertical direction, which corresponds to the Y axis. This rotation can be visualized in three-dimensional space by considering Eulerian angles and the relationships between different sets of orthogonal axes.
Learn more about Rotations in Three Dimensions here:
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