# JavaScript Math cos() Method

The Javascript 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 a 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 is an example of the Math cos() Method.

Example: This example returns the cosine of 0.

## Javascript

 `console.log(``"The cos of 0 : "` `+ Math.cos(0));`

Output
```The cos of 0 : 1

```

Example 1: This example returns the cosine of 010.

## Javascript

 `console.log(``"Result : "` `+ Math.cos(010));`

Output
```Result : -0.14550003380861354

```

Example 2: When 1 is passed as a parameter.

## Javascript

 `console.log(``"Result : "` `+ Math.cos(1));`

Output
```Result : 0.5403023058681398

```

Example 3: When PI is passed as a parameter.

## Javascript

 `console.log(``"Result : "` `+ Math.cos(Math.PI));`

Output
```Result : -1

```

Example 4: When Input is in degrees (not in radians)

## Javascript

 `const degree = 90;``console.log(``"cos("` `+ degree + ``") = "` `+ Math.cos((Math.PI * degree) / 180));`

Output
```cos(90) = 6.123233995736766e-17

```

We have a complete list of Javascript Math Objects methods, to check those please go through this Javascript Math Object Complete reference article.

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