# atand

Inverse tangent in degrees

## Syntax

``Y = atand(X)``

## Description

example

````Y = atand(X)` returns the inverse tangent (tan-1) of the elements of `X` in degrees. The function accepts both real and complex inputs. For real values of `X`, `atand(X)` returns values in the interval [-90, 90].For complex values of `X`, `atand(X)` returns complex values. ```

## Examples

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```x = [-50 -20 0 20 50]; y = atand(x)```
```y = 1×5 -88.8542 -87.1376 0 87.1376 88.8542 ```

The `atand` operation is element-wise when you pass a vector, matrix, or N-D array.

`atand(10+i)`
```ans = 84.3450 + 0.5618i ```

## Input Arguments

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Tangent of angle, specified as a real-valued or complex-valued scalar, vector, matrix, multidimensional array, table, or timetable. The `atand` operation is element-wise when `X` is non-scalar.

Data Types: `single` | `double` | `table` | `timetable`
Complex Number Support: Yes

## Output Arguments

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Angle in degrees, returned as a real-valued or complex-valued scalar, vector, matrix, multidimensional array, table, or timetable of the same size as `X`.

## Version History

Introduced before R2006a

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