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Get the arc tangent of a given value in Java
To get the arc tangent of a given value in Java, we use the java.lang.Math.atan() method. The atan() method accepts a double value whose angle needs to be computed. The range of the angle returned lies in the range -pi/2 to pi/2. If the argument is NaN, then the result is NaN.
When the argument is zero, then the output is a zero with the same sign as the argument.
Declaration −The java.lang.Math.atan() method is declared as follows −
public static double atan(double a)
where a is the value whose arc tangent is computed.
Let us see a program to get the arc tangent of a given value in Java.
Example
import java.lang.Math;
public class Example {
public static void main(String[] args) {
// get two double numbers in degrees
double x = Math.sqrt(3);
double y = 1;
// computing and displaying the arc tangent of these doubles
System.out.println(“Arc tangent of " + x + " = " + Math.atan(x));
System.out.println("Arc tangent of " + y + " = " + Math.atan(y));
}
}Output
Arc tangent of 1.7320508075688772 = 1.0471975511965976 Arc tangent of 1.0 = 0.7853981633974483
Updated on: 26-Jun-2020
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