---
title: acosh
framework: Kernel
role: symbol
role_heading: Function
platforms: [macOS 10.10+]
path: kernel/1557170-acosh
---

# acosh

## Declaration

```occ
double acosh(double);
```

## See Also

### Arccosine

- [acos](kernel/1557251-acos.md)
- [acosf](kernel/1557163-acosf.md)
- [acoshf](kernel/1557276-acoshf.md)
- [acoshl](kernel/1557266-acoshl.md)
- [acosl](kernel/1557197-acosl.md)