elasticsearch/docs/reference/query-languages/esql/_snippets/functions/cos.md

COS [esql-cos]

Syntax

:::{image} ../../../../../images/cos.svg :alt: Embedded :class: text-center :::

Parameters

angle

An angle, in radians. If null, the function returns null.

Description

Returns the cosine of an angle.

Supported types

angle	result
double	double
integer	double
long	double
unsigned_long	double

Example

ROW a=1.8
| EVAL cos=COS(a)

a:double	cos:double
1.8	-0.2272020946930871