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doc-fr/reference/math/functions/atan.xml
Yannick Torres f600172f5d sync with EN (docBook update)
git-svn-id: https://svn.php.net/repository/phpdoc/fr/trunk@240229 c90b9560-bf6c-de11-be94-00142212c4b1
2007-07-23 19:07:09 +00:00

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XML

<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.11 $ -->
<!-- EN-Revision: 1.8 Maintainer: yannick Status: ready -->
<!-- Reviewed: no -->
<refentry xml:id="function.atan" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>atan</refname>
<refpurpose>Arc tangente</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>float</type><methodname>atan</methodname>
<methodparam><type>float</type><parameter>arg</parameter></methodparam>
</methodsynopsis>
<para>
Retourne l'arc tangent de <parameter>arg</parameter> (<parameter>arg</parameter>
en radians). <function>atan</function> est la fonction inverse de
<function>tan</function>, ce qui signifie que
<literal>a==tan(atan(a))</literal> pour toute valeur qui soit dans
l'intervalle de validité de <function>atan</function>.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>arg</parameter></term>
<listitem>
<para>
L'argument à traiter
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
L'arc tangent de <parameter>arg</parameter>, en radians.
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>tan</function></member>
<member><function>atanh</function></member>
<member><function>asin</function></member>
<member><function>acos</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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