# Difference between revisions of "ApCoCoA-1:Fn.ArcSin"

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− | <see> | + | <see>Fn.GetAccuracy</see> |

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## Revision as of 08:58, 5 May 2011

## Fn.ArcSin

Returns the arcsine of a given value.

### Syntax

Fn.ArcSin(X:RAT):RAT

### Description

This function returns the arcsine of `X` rounded to the current

global accuracy. The domain of this functions ranges between -1

and 1.

@param

*X*Value of which to compute the arcsine.@return The arcsine of

`X`rounded to the current global accuracy.

#### Example

Fn.SetAccuracy(20); R := Fn.ArcSin(1/2); Dec(R, 30); 0.52359877559829887308 -------------------------------