Suppose you are interested in finding the unit vector between two points, and
, which are described in cartesian coordinates as
and
, respectively.
You would begin by finding the vector between these two points. The direction of this vector may be important so look for key words such as
. Once we have established the direction we’re going in,
to
in this case, we subtract the beginning point from the end point.
. This will give us the vector we are looking for. The next step would be to convert this vector into a unit vector, by dividing it by it’s magnitude.
These are the two formulas we are looking at:
Note:
Here I use as my vector from
to
and
denotes the unit vector from
to
.
Implementing these formulas:
Hmm.. The End