How to Use the Math.atan() Method in JavaScript

Contents
In this article, you will learn how to use the Math.atan() method in JavaScript.
Using the Math.atan() method in JavaScript
The Math.atan() method is a built-in function in JavaScript that returns the arctangent (in radians) of a given number. The input parameter can be any number, positive or negative.
Syntax
The syntax for using the Math.atan() method is:
Math.atan(x)
where x is the input parameter that represents the tangent of an angle.
Examples
Using Math.atan() to calculate the arctangent of a number
const x = 0.5;
const arctangent = Math.atan(x);
console.log(arctangent); // 0.4636476090008061
In this example, the input parameter is 0.5, which represents the tangent of an angle. The output is the arctangent of 0.5 in radians, which is approximately 0.4636.
Using Math.atan() with a negative value
const x = -0.7;
const arctangent = Math.atan(x);
console.log(arctangent); // -0.6107259643892086
In this example, the input parameter is -0.7, which represents the tangent of an angle. The output is the arctangent of -0.7 in radians, which is approximately -0.6107.
Note: The output of the Math.atan() method is always in radians. If you want to convert the result to degrees, you can use the following formula:
degrees = radians * (180 / Math.PI)
where radians is the output of the Math.atan() method.