What is Math.acosh() method in JavaScript?

Math.acosh() is a JavaScript method that calculates the inverse hyperbolic cosine of a number. It was added to the Math object in ECMAScript 5.

The Math.acosh() method takes a single number argument and returns the inverse hyperbolic cosine of that number. It can be used to calculate the angle in radians that is the arccosine of a number.

The Math.acosh() method can be used to calculate the following expression:

The following code sample calculates the angle in radians that is the arccosine of a number using the Math.acosh() method:

var num = 2.14;
var angleInRadians = Math.acosh(num);
console.log(angleInRadians);

The returned value is 1.5707963267948966.

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