So L passes through
Now what you are looking for is the shortest path from the line to the point, which happens to be perpendicular...meaning the dot products of the two lines = 0. Does that help you?
The line L has a vector equation of r=2i-j+4k + s(i+j-k)
the point P lies on line L and the point Q has position vector of 2i-k
Q: Given that line PQ is perpendicular to L find the position vector of P?
can someone help me with this question please thanks in advacne