---
schema_version: "1"
id: 8b71ca609714a2a153bdca98e41623a49c255452bc5f20365d751eec1caeace1
title: acos({n})
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content_type: documentation
content_hash: ab41dae1690cb57b1fadd23d7968dae54051162628b06e56cfd7f5ace2cc9d61
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  - SQL for Analytics Developer Guide
  - analytics
---

# acos({n})

Returns the arccosine value of radians value `{n}`. `{n}` can be any real number in the range of -1 \<= `{n}` \<= 1. If `null` is passed as an argument, `acos()` returns `null`.

`acos({n})` takes the following syntax.

```nolang
SELECT ACOS(N) as ALIAS
FROM DATASET;
```

## Example

This example takes the arccosine of 35 degrees.

```nolang
SELECT ACOS(RADIANS(90)) as acosValue
FROM "Opportunity"
LIMIT 1;
```

| acosValue |
| --------- |
| 0.913643  |