The java.lang.Math.asin() returns the arc sine of an angle in between -pi/2 and pi/2. Arc sine is also called as an inverse of a sine.
- 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.
Syntax :
public static double asin(double angle) Parameter : angle : the value whose arc sine is to be returned.
Return :
This method returns the arc sine of the argument.
Example 1 : To show working of java.lang.Math.asin() method.
// Java program to demonstrate working// of java.lang.Math.asin() methodimport java.lang.Math;Â
class Gfg {Â
    // driver code    public static void main(String args[])    {        double a = Math.PI;Â
        // Output is NaN, because Math.PI gives 3.141 value        // greater than 1        System.out.println(Math.asin(a));Â
        // convert Math.PI to radians        double b = Math.toRadians(a);Â
        System.out.println(Math.asin(b));Â
        double c = 1.0;        System.out.println(Math.asin(c));Â
        double d = 0.0;        System.out.println(Math.asin(d));Â
        double e = -1.0;        System.out.println(Math.asin(e));Â
        double f = 1.5;Â
        // value of f does not lie in between -1 and 1        // so output is NaN        System.out.println(Math.asin(f));    }} |
Output:
NaN 0.054858647341251204 1.5707963267948966 0.0 -1.5707963267948966 NaN
