Textbook ExpertVerified Tutor
31 Dec 2021
Given information
Given two lines 
and 
whose slopes are 
and 
respectively
Step-by-step explanation
Step 1.
There is trigonometric relation : 
The slope of a line is the tangent of that angle measured from the x-axis.
so 
and 
Angle between the two slopes with and is 
,and 
Single Variable Calculus: Early Transcendentals
4th Edition, 2018
Stewart
ISBN: 9781337687805