acos.xml

<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="function.acos" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>acos</refname>
  <refpurpose>Arc cosinus</refpurpose>
 </refnamediv>
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>float</type><methodname>acos</methodname>
   <methodparam><type>float</type><parameter>num</parameter></methodparam>
  </methodsynopsis>
  <para>
   Retourne l'arc cosinus de <parameter>num</parameter>.
   <function>acos</function> est la fonction inverse de
   <function>cos</function>, ce qui signifie que
   <code>$num == cos(acos($num))</code> pour chaque valeur de
   <parameter>num</parameter> qui est dans
   le domaine de la fonction <function>acos</function>.
  </para>
 </refsect1>
 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>num</parameter></term>
     <listitem>
      <para>
       L'argument à traiter
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   L'arc cosinus de <parameter>num</parameter>, en radians.
  </para>
 </refsect1>
 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>cos</function></member>
    <member><function>acosh</function></member>
    <member><function>asin</function></member>
    <member><function>atan</function></member>
   </simplelist>
  </para>
 </refsect1>
</refentry>
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