atan2f - Linux

Overview

atan2f calculates the arc tangent (in radians) of the specified input values, y and x. It is primarily used in trigonometry and geometry to determine the angle between two points or vectors.

Syntax

atan2f(y, x)
  • y: The y-coordinate of the point or vector.
  • x: The x-coordinate of the point or vector.

Options/Flags

None

Examples

Calculate the angle between two points:

$ echo $(atan2f 3 4)
0.643501

Convert an angle from radians to degrees:

$ echo $(atan2f 1 0) | awk '{print $1 * 180 / 3.14159265}'
90

Common Issues

  • Zero Division Error: If x is 0 and y is also 0, the calculation will fail with a zero division error.

Integration

atan2f can be used with other commands to perform complex calculations, such as:

$ echo $(atan2f $(echo $x / $y) 1) # Calculate the angle of a vector

Related Commands