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JavaScript Math cos( ) Method

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  • Last Updated : 02 Feb, 2022

Below is the example of the Math cos() Method. 

  • Example: 


<script type="text/javascript">
         document.write("The cos of 0 : " + Math.cos(0));

  • Output: 
The cos of 0 : 1

The Math.cos() method is used to return the cosine of a number. The Math.cos() method returns a numeric value between -1 and 1, which represents the cosine of the angle given in radians. The cos() is a static method of Math, therefore, it is always used as Math.cos(), rather than as a method of a Math object created.


Parameters: This function accepts single parameter as mentioned above and described below: 

  • value: This parameter is a number given in radians.

Returns: The Math.cos() function returns the cosine of the given numbers which range from -1 to 1.
Below example illustrate the cos() method in JavaScript: 

  • Example 1: 
Input: Math.cos(010)
Output : -0.14550003380861354
  • Example 2: 
Input: Math.cos(10)
Output : -0.8390715290764524

More codes for the above method are as follows: 
Program 1: When 1 is passed as a parameter. 


<script type="text/javascript">
         document.write("Result : " + Math.cos(1));


Result : 0.5403023058681398

Program 2: When PI is passed as a parameter. 


<script type="text/javascript">
         document.write("Result : " + Math.cos(Math.PI));


Result : -1

Supported Browsers: 

  • Google Chrome 1 and above
  • Internet Explorer 3 and above
  • Firefox 1 and above
  • Opera 3 and above
  • Safari 1 and above


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