hugo/docs/content/en/functions/math/Cos.md

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---
title: math.Cos
description: Returns the cosine of the given radian number.
categories: []
keywords: []
action:
aliases: []
related:
- functions/math/Pi
- functions/math/Sin
- functions/math/Tan
- functions/math/Asin
- functions/math/Acos
- functions/math/Atan
- functions/math/Atan2
returnType: float64
signatures: [math.Cos VALUE]
---
{{< new-in 0.130.0 >}}
```go-html-template
{{ math.Cos 1 }} → 0.5403023058681398
```