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

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

math.sin() returns the sine of the radian argument x.

Function type signature

(x: float) => float

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

Parameters

x

({{< req >}}) Radian value to use in the operation.

Examples

• Return the sine of a radian value
• Use math.sin in map

Return the sine of a radian value

import "math"

math.sin(x: 3.14)// 0.0015926529164868282

Use math.sin in map

import "math"
import "sampledata"

sampledata.float()
    |> map(fn: (r) => ({r with _value: math.sin(x: r._value)}))

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Input data

_time	*tag	_value
2021-01-01T00:00:00Z	t1	-2.18
2021-01-01T00:00:10Z	t1	10.92
2021-01-01T00:00:20Z	t1	7.35
2021-01-01T00:00:30Z	t1	17.53
2021-01-01T00:00:40Z	t1	15.23
2021-01-01T00:00:50Z	t1	4.43

_time	*tag	_value
2021-01-01T00:00:00Z	t2	19.85
2021-01-01T00:00:10Z	t2	4.97
2021-01-01T00:00:20Z	t2	-3.75
2021-01-01T00:00:30Z	t2	19.77
2021-01-01T00:00:40Z	t2	13.86
2021-01-01T00:00:50Z	t2	1.86

Output data

_time	_value	*tag
2021-01-01T00:00:00Z	-0.8201039476213742	t1
2021-01-01T00:00:10Z	-0.9971456224759652	t1
2021-01-01T00:00:20Z	0.8756667135928823	t1
2021-01-01T00:00:30Z	-0.9686047952311415	t1
2021-01-01T00:00:40Z	0.4599716480084409	t1
2021-01-01T00:00:50Z	-0.9603924882355435	t1

_time	_value	*tag
2021-01-01T00:00:00Z	0.8417108384451784	t2
2021-01-01T00:00:10Z	-0.9670013802437661	t2
2021-01-01T00:00:20Z	0.5715613187423438	t2
2021-01-01T00:00:30Z	0.7958705732618963	t2
2021-01-01T00:00:40Z	0.9618345122584524	t2
2021-01-01T00:00:50Z	0.9584712830789142	t2

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