Discussion on the use of Math.atan of method in JavaScript

2020-06-15 07:40:17
OfStack

This method returns the inverse tangent of radians. The atan method returns a number between -ES2en /2 and PI /2 radians.
grammar


Math.atan( x ) ;

Here is the details of the parameters:

x: One number

The return value:

Returns the inverse tangent of 1 number of radians

Example:


<html>
<head>
<title>JavaScript Math atan() Method</title>
</head>
<body>
<script type="text/javascript">

var value = Math.atan(-1);
document.write("First Test Value : " + value ); 
 
var value = Math.atan(.5);
document.write("<br />Second Test Value : " + value ); 

var value = Math.atan(30);
document.write("<br />Third Test Value : " + value ); 

var value = Math.atan("string");
document.write("<br />Fourth Test Value : " + value ); 
</script>
</body>
</html>

This will produce the following results:


First Test Value : -0.7853981633974483
Second Test Value : 0.4636476090008061
Third Test Value : 1.5374753309166493
Fourth Test Value : NaN