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

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## Latest revision as of 10:01, 7 October 2020

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

## Fn.ArcTanN

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

### Syntax

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

### Description

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

accuracy `Acc`.

@param

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

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

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

#### Example

R := Fn.ArcTanN(1/2, 30); Dec(R, 40); 0.463647609000806116214256231461 -------------------------------