# acosd

> For the complete documentation index, see [llms.txt](https://docs.redpanda.com/llms.txt). Component-specific: [cloud-data-platform-full.txt](https://docs.redpanda.com/cloud-data-platform-full.txt)

---
title: acosd
latest-operator-version: v26.2.4
latest-console-tag: v3.12.0
latest-connect-version: 4.113.1
latest-redpanda-tag: v26.2.4
docname: sql/sql-functions/math-functions/acosd
page-component-name: cloud-data-platform
page-version: master
page-component-version: master
page-component-title: Cloud
page-relative-src-path: sql/sql-functions/math-functions/acosd.adoc
page-edit-url: https://github.com/redpanda-data/cloud-docs/edit/main/modules/reference/pages/sql/sql-functions/math-functions/acosd.adoc
description: The `acosd()` function returns the inverse cosine (arccosine) of a specified argument, expressed in degrees.
page-topic-type: reference
page-git-created-date: "2026-09-08"
page-git-modified-date: "2026-09-08"
---

<!-- Source: https://docs.redpanda.com/cloud-data-platform/reference/sql/sql-functions/math-functions/acosd.md -->

The `acosd()` function returns the inverse cosine (arccosine) of a specified argument, expressed in degrees. See also [`acos()`](https://docs.redpanda.com/cloud-data-platform/reference/sql/sql-functions/math-functions/acos/) to return the result in radians.

## [](#syntax)Syntax

```sql
ACOSD(x)
```

## [](#arguments)Arguments

-   `x`: A number of type `real` or `double precision`, between -1 and 1 inclusive.


## [](#return-type)Return type

Same as the input type (`real` or `double precision`).

## [](#examples)Examples

### [](#basic-usage)Basic usage

```sql
SELECT ACOSD(0.5);
```

```sql
 acosd
-------
    60
(1 row)
```

### [](#boundary-argument)Boundary argument

```sql
SELECT ACOSD(1);
```

```sql
 acosd
-------
     0
(1 row)
```