JavaScript(JS) math method - cosh

The cosh method in JavaScript's Math object returns the hyperbolic cosine of a number, which is defined as (e^x + e^-x)/2, where e is the base of the natural logarithm.

The cosh method takes one argument, which is the number whose hyperbolic cosine needs to be calculated. If the argument is not a number, it will be converted to one before the calculation. If the argument is NaN, NaN will be returned.

Here's an example usage:

const x = 1;
const coshX = Math.cosh(x);
console.log(coshX); // 1.5430806348152437

In the above example, the Math.cosh method is used to calculate the hyperbolic cosine of the number 1. The result, which is approximately 1.5430806348152437, is then logged to the console.