Java .atan()
Published Jul 19, 2021Updated Jun 11, 2025
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The Math.atan() method returns the inverse tangent (or arctangent) of the argument in radians.
Syntax
Math.atan(n)
n is a double whose arctangent is returned.
Example
The following example uses Math.atan() to return the inverse tangent of 1.0:
public class Main {public static void main(String[] args) {double x = 1.0;System.out.println(Math.atan(x));// Output: 0.7853981633974483}}
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