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78 lines
2.1 KiB
XML
78 lines
2.1 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: abed9056c54488744908309aefc6265f56329dca Maintainer: yannick Status: ready -->
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<!-- Reviewed: no -->
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<refentry xml:id="function.atan" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>atan</refname>
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<refpurpose>Arc tangente</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>float</type><methodname>atan</methodname>
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<methodparam><type>float</type><parameter>num</parameter></methodparam>
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</methodsynopsis>
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<para>
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Retourne l'arc tangent de <parameter>num</parameter>, en radians.
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<function>atan</function> est la fonction inverse de
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<function>tan</function>, ce qui signifie que
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<code>$num == tan(atan($num))</code> pour chaque valeur de
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<parameter>num</parameter> qui est dans
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le domaine de la fonction <function>atan</function>.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>num</parameter></term>
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<listitem>
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<para>
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L'argument à traiter
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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L'arc tangent de <parameter>num</parameter>, en radians.
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</para>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>tan</function></member>
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<member><function>atanh</function></member>
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<member><function>asin</function></member>
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<member><function>acos</function></member>
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</simplelist>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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