The direction from an object
to another object
can be specified as a vector with tail at and head at . However, since this vector has length equal to the *distance*
between the objects in addition to encoding the direction from the first to the second,
it is natural to instead consider the unit vector (sometimes called the direction vector),
which decouples the distance from the direction.

# Direction

## See also

Head, Tail, Unit Vector, Vector## Explore with Wolfram|Alpha

## Cite this as:

Weisstein, Eric W. "Direction." From *MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/Direction.html