Inclination and Angle between Two Lines
Posted: April 8th, 2011, 9:48 pmThe inclination of a nonhorizontal line is the positive angle θ (less than 
) measured counterclockwise from the x-axis to the line
If a nonvertical line has inclination θ and slope m, then
Angle between two lines
If two nonperpendicular lines have slopes m[sub]1[/sub] and m[sub]2[/sub], the angle between the two lines is
If a nonvertical line has inclination θ and slope m, then
- m = tan θ
Angle between two lines
If two nonperpendicular lines have slopes m[sub]1[/sub] and m[sub]2[/sub], the angle between the two lines is