Concept
(1)
The angle inclination of a line is the angle formed by the intersection of the line and the x-axis. Using a horizontal "run" of 1 and m for slope, the angle of inclination, theta=tan-1(m), or m=tan(theta). Therefore, if the angle or the slope is known, the other can be found using one of the equations. If the angle of inclination is negative, then the slope of the line is also negative.
Sample Problems
(3)
Need help with "Angle Inclination of a Line" problems? Watch expert teachers solve similar problems to develop your skills.
Problem 1
How to find the equation of a line based on the angle of inclination.
Problem 2
How to find the angle of inclination of a line.
Problem 3
How to find the angle of intersection of two lines using the angle of inclination.
