# JavaScript Math cos( ) Method

• Last Updated : 02 Feb, 2022

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

• Example:

## html

 `<``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.

## html

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

Output:

`Result : 0.5403023058681398`

Program 2: When PI is passed as a parameter.

## html

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

Output:

`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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