# JavaScript Math cos( ) Method

• Last Updated : 08 Jul, 2020

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

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• 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.

Syntax:

`Math.cos(value)`

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));```

Output:

`Result : 0.5403023058681398`

Program 2: When PI is passed as a parameter.

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

Output:

`Result : -1`

Supported Browsers: