# ApCoCoA-1:Fn.ArcSinN

From ApCoCoAWiki

## Fn.ArcSinN

Returns the arcsine of a given value with a given accuracy.

### Syntax

Fn.ArcSinN(Val:RAT,Acc:INT):RAT

### Description

This function returns the arcsine of `Val` rounded to the given

accuracy `Acc`. The domain of this functions ranges between -1

and 1.

@param

*Val*Value of which to compute the arcsine.@param

*Acc*The desired accuracy.@return The arcsine of

`Val`rounded to the given accuracy`Acc`.

#### Example

R := Fn.ArcSinN(1/2, 30); Dec(R, 40); 0.523598775598298873077107230547 -------------------------------