Sometimes, we want to calculate the angle between a line and the horizontal axis with Python.
In this article, we’ll look at how to calculate the angle between a line and the horizontal axis with Python.
How to calculate the angle between a line and the horizontal axis with Python?
To calculate the angle between a line and the horizontal axis with Python, we calculate the difference between the x and y coordinates.
Then we use atan2 with the deltas to get the angle.
For instance, we write
delta_y = P2_y - P1_y
delta_x = P2_x - P1_x
angle_degrees = atan2(delta_y, delta_x) * 180 / PI
to calculate the delta_y and delta_x values from the by subtracting the coordinates of y and x of the 2 points.
Then we call atan2 with delta_y and delta_x to get the angle between the line and the horizontal axis in radians.
Then we multiply that by 180 / PI` to get the value in degrees.
Concllusion
To calculate the angle between a line and the horizontal axis with Python, we calculate the difference between the x and y coordinates.
Then we use atan2 with the deltas to get the angle.
