# acosd

Inverse cosine in degrees.

## Syntax

* res = acosd(x)

## Input argument

* x - a numeric value

## Output argument

* res - a numeric value

## Description

**atand** computes the inverse cosine in degrees for each element of **x**.

## Example

```matlab
x = [1 -20 0 2 5];
y = acosd(x)
```

## See also

[cosd](https://github.com/Nelson-numerical-software/nelson-gitbook/blob/master/en/trigonometric_functions/cosd.html).

## History

| Version | Description     |
| ------- | --------------- |
| 1.0.0   | initial version |

## Author

Allan CORNET
