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## Homework Statement

I have two x,y,z coordinates - a & b. I know the distance between the coordinates. I need to get a 3D vector which represent the direction between vector a and vector b.

## Homework Equations

I am unsure as to whether the I should simply substract each respective coordinate value from one to the other i.e. (x1-x2,y1-y2,z1-z2)

## The Attempt at a Solution

I tried to apply the forumula above to a trivial case e.g.

A = (1,1,1); B = (2,2,2); C=(2-1,2-1,2-1,)=(1,1,1)

I am not sure if this is right.