Write the angle between the lines 2x = 3y = –z and 6x = –y = –4z.
We have,
2x = 3y = -z
6x = -y = -4z
The given lines can be re-written as
These lines are parallel to vectors,
and
Let θ be the angle between these lines.
Now,
cosθ
= 0
→ θ