JavaScript(JS) math method - asin

The JavaScript asin() method is a built-in Math function that returns the arcsine (in radians) of a number. The arcsine is the inverse function of the sine function, and it returns the angle whose sine is a given number.

The asin() method takes a single argument, which is the number whose arcsine you want to find. The argument must be a number between -1 and 1 (inclusive), otherwise, the method will return NaN (Not a Number).

Here is an example of using the asin() method:

const x = 0.5;
const y = Math.asin(x);
console.log(y); // Output: 0.5235987755982989

In this example, the asin() method is used to find the arcsine of the number 0.5, which is approximately 0.5235987755982989 radians (or approximately 30 degrees).