# Documentation

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# atand

Inverse tangent in degrees

## Syntax

• ``Y = atand(X)``
example

## Description

example

````Y = atand(X)` returns the inverse tangent (tan-1) of the elements of `X` in degrees. The function's domain and range include complex values. For real elements of `X` in the domain [-Inf, Inf], `atand` returns values in the range [-90, 90]. For complex values of `X`, `atand` returns complex values.```

## Examples

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```x = [-50 -20 0 20 50]; y = atand(x) ```
```y = -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, or N-D array. The `atand` operation is element-wise when `X` is non-scalar.

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

## Output Arguments

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

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### Tall Array Support

This function fully supports tall arrays. For more information, see Tall Arrays.