Find the angle between the lines whose slopes are 
and 
We know that if slope of two lines are m1 and m2 respectively, then the angle between them is given by
Here 
and 
Where θ is the angle between two lines.
1
Find the angle between the lines whose slopes are and
We know that if slope of two lines are m1 and m2 respectively, then the angle between them is given by
Here and
Where θ is the angle between two lines.