MCQ
In three dimensions, the coordinate axes of a rectangular cartesian coordinate system are:
- AThree mutually parallel lines
- BThree mutually perpendicular lines
- CTwo mutually perpendicular lines and any two parallel
- DNone of these
Solution:
In three dimensions, the coordinate axes, i.e. x, y and z axes of a rectangular cartesian coordinate system are three mutually perpendicular lines. The word rectangular is used to indicate perpendicularity among the axes.
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