# Cos function (LotusScript® Language)

Returns the cosine of an angle.

## Syntax

**Cos** **(** *angle* **)**

## Elements

*angle*

A numeric expression, specifying an angle expressed in radians.

## Return value

Cos returns the cosine of *angle,* a value between
-1 and 1, inclusive.

The data type of the return value is Double.