Javascript Math.atan( ) method is used to return the arctangent of a number in radians. The Math.atan() method returns a numeric value between -pi/2 and pi/2 radians. The atan() is a static method of Math, therefore, it is always used as Math.atan(), rather than as a method of a Math object created.
Math.atan(x)=arctan(x)=unique y where y belongs to [-pi/2;pi/2] such that tan(y)=x
Syntax:
Math.atan(value)
Parameters: This function accepts a single parameter as mentioned above and described below:
- x: which is a number in radians whose arctangent you want to find.
Returns: The Math.atan() function returns the arctangent of the given number in radians. The below examples illustrate the Math atan( ) method in JavaScript
Below is an example of the Math atan( ) Method.
Example 1: This example returns the atan value when 1 is passed as a parameter.
javascript
console.log("When 1 is passed as a parameter: " + Math.atan(1)); |
When 1 is passed as a parameter: 0.7853981633974483
Example 2: This example returns the atan value when 0 is passed as a parameter.
javascript
console.log("When 0 is passed as a parameter: " + Math.atan(0)); |
When 0 is passed as a parameter: 0
Example 3: This example returns the atan value when -0 is passed as a parameter.
javascript
console.log("When -0 is passed as a parameter: " + Math.atan(-0)); |
When -0 is passed as a parameter: 0
Example 4: This example returns the atan value when infinity is passed as a parameter.
javascript
console.log("When Infinity is passed as a parameter: " + Math.atan(Infinity)); |
When Infinity is passed as a parameter: 1.5707963267948966
Example 5: This example returns the atan value when -infinity is passed as a parameter.
javascript
console.log("When -Infinity is passed as a parameter: " + Math.atan(-Infinity)); |
When -Infinity is passed as a parameter: -1.5707963267948966
We have a complete list of Javascript Math Objects methods, to check those please go through this Javascript Math Object Complete reference article.
Supported Browsers:
- Google Chrome 1 and above
- Firefox 1 and above
- Opera 3 and above
- Safari 1 and above
