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

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## Latest revision as of 10:00, 7 October 2020

This article is about a function from ApCoCoA-1. |

## Fn.ArcCosN

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

### Syntax

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

### Description

This function returns the arccosine 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 arccosine.@param

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

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

#### Example

R := Fn.ArcCosN(1/2, 30); Dec(R, 40); 1.047197551196597746154214461093 -------------------------------