# Math.cos method

The `Math.cos` method returns the cosine of a number (this number must be an angle in radians).

## Syntax

`Math.cos(number);`

## Example

Let's output the cosine of the number `34`:

`console.log(Math.cos(34));`

The code execution result:

`-0.8485702747846052`

## See also

- the `Math.sin` method
  that returns the sine of a number
- the `Math.tan` method
  that returns the tangent of a number
- the `Math.asin` method
  that returns the arcsine of a number
- the `Math.acos` method
  that returns the arccosine of a number
- the `Math.atan` method
  that returns the arctangent of a number

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