Java Math.asin() method returns arc sine of the given value. Arc sine is the inverse of the sine function. The value returned by this method ranges between -pi/2 and pi/2.
public class JavaExample { public static void main(String[] args) { double a = 1.0; System.out.println(Math.asin(a)); } }
Output:
1.5707963267948966
Syntax of Math.asin() method
Math.asin(0); //returns 0.0
asin() Description
public static double asin(double a): Returns the arc sine of the given double value a
.
asin() Parameters
- a: A double type value whose arc sine is to be determined.
asin() Return Value
- The arc sine of the argument.
- If the argument is NaN (Not a number) or its absolute value is greater than 1, then it returns NaN.
- If the argument is zero, then it returns zero with the same sign.
Example 1
public class JavaExample { public static void main(String[] args) { double d1 = 1.0; double d2 = 0; double d3 = -1.0; System.out.println(Math.asin(d1)); System.out.println(Math.asin(d2)); System.out.println(Math.asin(d3)); } }
Output:

Example 2
public class JavaExample { public static void main(String[] args) { double d1 = Double.MAX_VALUE; double d2 = Double.MIN_VALUE; double d3 = 0.0/0; //NaN System.out.println(Math.asin(d1)); System.out.println(Math.asin(d2)); System.out.println(Math.asin(d3)); } }
Output:

Example 3
public class JavaExample { public static void main(String[] args) { double d1 = Double.POSITIVE_INFINITY; double d2 = Double.NEGATIVE_INFINITY; double d3 = Math.PI; System.out.println(Math.asin(d1)); System.out.println(Math.asin(d2)); System.out.println(Math.asin(d3)); } }
Output:
