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Q.
$L$ is the foot of the perpendicular drawn from a point $(3,5,6)$ on $x$-axis. The coordinates of $L$ are
Introduction to Three Dimensional Geometry
Solution:
Since $L$ is the foot of perpendicular from point $(3,5,6)$ on the $x$-axis so, its $y$ and $z$-coordinates are zero. Hence, the coordinates of $L$ are $(3,0,0)$.