---
title: math.sin() function
description: math.sin() returns the sine of the radian argument x.
url: https://docs.influxdata.com/flux/v0/stdlib/math/sin/
estimated_tokens: 1406
product: Flux
version: v0
---

# math.sin() function

-   Flux 0.22.0+
-   View InfluxDB support

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

##### Function type signature

```js
(x: float) => float
```

For more information, see [Function type signatures](/flux/v0/function-type-signatures/).

## Parameters

### x

(Required) Radian value to use in the operation.

## Examples

-   [Return the sine of a radian value](#return-the-sine-of-a-radian-value)
-   [Use math.sin in map](#use-mathsin-in-map)

### Return the sine of a radian value

```js
import "math"

math.sin(x: 3.14)// 0.0015926529164868282

```

### Use math.sin in map

```js
import "math"
import "sampledata"

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

[](#view-example-input-and-output)

View example input and output

#### 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 |