---
title: "acos | open.mp"
description: "Get the inversed value of a cosine in degrees."
canonical: https://omp.itsneufox.com/docs/scripting/functions/acos
language: en
---

# acos

## Description

Get the inversed value of a cosine in degrees. In trigonometrics, arc cosine is the inverse operation of cosine.

| Name | Description |
| --- | --- |
| Float:value | value whose arc cosine is computed, in the interval \[-1,+1\]. |

## Returns

The angle in degrees, in the interval \[0.0,180.0\].

## Examples

```c
//The arc cosine of 0.500000 is 60.000000 degrees.

public OnGameModeInit()
{
    new Float:param, Float:result;
    param = 0.5;
    result = acos(param);
    printf("The arc cosine of %f is %f degrees.", param, result);
    return 1;
}
```

## Related Functions

-   [floatsin](https://omp.itsneufox.com/docs/scripting/functions/floatsin): Get the sine from a specific angle.
-   [floatcos](https://omp.itsneufox.com/docs/scripting/functions/floatcos): Get the cosine from a specific angle.
-   [floattan](https://omp.itsneufox.com/docs/scripting/functions/floattan): Get the tangent from a specific angle.
-   [asin](https://omp.itsneufox.com/docs/scripting/functions/asin): Get the inversed value of a sine in degrees.
-   [atan](https://omp.itsneufox.com/docs/scripting/functions/atan): Get the inversed value of a tangent in degrees.
-   [atan2](https://omp.itsneufox.com/docs/scripting/functions/atan2): Get the multi-valued inversed value of a tangent in degrees.