Write the angle between the lines 
and 
We have,
The given lines are parallel to the vectors
→ 
and 
Let θ be the angle between the given lines.
Now,
cos θ 
= 0
→ θ 
1
Write the angle between the lines and
We have,
The given lines are parallel to the vectors
→ and
Let θ be the angle between the given lines.
Now,
cos θ
= 0
→ θ