# arcsin

## Returns the inverse sine of x.

**Syntax:**

arcsin(x);

Argument |
Description |

x |
The angle (in radians) to return the inverse sine of. |

**Returns:** Real

### Description

Returns the inverse sine of x, in that if sin(x)=n, arcsin(n)=x,
and the resulting number will be between -pi/2 and pi/2.

**NOTE:** This will only accept a value between -1 and 1
(anything else will throw an error).

**Example:**

val = arcsin( 0 );

This will set val to 0.

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