# Documentation

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# asind

Inverse sine in degrees

## Syntax

• ``Y = asind(X)``
example

## Description

example

````Y = asind(X)` returns the inverse sine (sin-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 [-1,1], `asind` returns values in the range [-90,90]. For values of `X` outside this range, `asind` returns complex values.```

## Examples

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Show that the inverse sine of 1 is exactly 90°.

```asind(1) ```
```ans = 90 ```

Show that the inverse sine, followed by sine, returns the original values of `X`.

```sind(asind([2 3])) ```
```ans = 2.0000 3.0000 ```

Plot the inverse sine function over the domain .

```x = -1:.01:1; plot(x,asind(x)) grid on ```

## Input Arguments

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Sine of angle, specified as a real-valued or complex-valued scalar, vector, matrix, or N-D array. The `asind` operation is element-wise when `X` is nonscalar.

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`.

## More About

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### Tall Array Support

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

## See Also

#### Introduced before R2006a

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