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

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## Revision as of 16:07, 2 October 2020

## Fn.Cos

Returns the cosine of a given value.

### Syntax

Fn.Cos(X:RAT):RAT

### Description

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

global accuracy.

@param

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

`X`rounded to the current global accuracy.

#### Example

Fn.SetAccuracy(20); R := Fn.Cos(1); Dec(R, 30); 0.5403023058681397174 -------------------------------