The Math cosh() static method returns the hyperbolic cosine of a number.
console.log(Math.cosh(0));
// 1
console.log(Math.cosh(1));
// 1.543080634815244
console.log(Math.cosh(-1));
// 1.543080634815244
console.log(Math.cosh(2));
// 3.7621956910836314