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title: cos(n)
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---

# cos(n)

Returns the cosine value of radians value _n_. _n_ can be any real numeric value in the range of -1e308 \<= _n_ \<= 1e308. If `null` is passed as an argument, `cos()` returns `null`. This function can only be used in a `foreach` statement.

## Example

```nolang
q = foreach q generate cos(radians) as cosine;
```