docs-v2/content/flux/v0/stdlib/math/cos.md

title	description	menu	weight
math.cos() function	`math.cos()` returns the cosine of the radian argument `x`.	flux_v0_ref name parent identifier math.cos math math/cos	101

math.cos() returns the cosine of the radian argument x.

Function type signature

(x: float) => float

{{% caption %}} For more information, see Function type signatures. {{% /caption %}}

Parameters

x

({{< req >}}) Value to operate on.

Examples

Use math.cos in map

import "math"
import "sampledata"

sampledata.float()
    |> map(fn: (r) => ({_time: r._time, _value: math.cos(x: r._value)}))