Java Math - asin() Method

The java.lang.Math.asin() method returns arc sine of a value. The returned value will be in the range -𝜋/2 through 𝜋/2. In special cases it returns the following:

• If the argument is NaN or its absolute value is greater than 1, then the result is NaN.
• If the argument is zero, then the result is a zero with the same sign as the argument.

Note: asin() is the inverse of sin().

Syntax

public static double asin(double a)

Parameters

Return Value

Returns the arc sine of the argument.

Exception

NA.

Example:

In the example below, asin() method is used to find out the arc sine of the given values.

import java.lang.*;

public class MyClass {
 public static void main(String[] args) {
  System.out.println(Math.asin(0.5));   
  System.out.println(Math.asin(1));
  System.out.println(Math.asin(2));     
 }
}

The output of the above code will be:

0.5235987755982989
1.5707963267948966
NaN