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sin.xml
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sin.xml
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<?xml version="1.0" encoding="UTF-8"?>
<!-- EN-Revision: n/a Maintainer: cortesi Status: ready -->
<refentry xml:id="function.sin" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>sin</refname>
<refpurpose>Seno</refpurpose>
</refnamediv>
<refsect1>
<title>Descrizione</title>
<methodsynopsis>
<type>float</type><methodname>sin</methodname>
<methodparam><type>float</type><parameter>arg</parameter></methodparam>
</methodsynopsis>
<para>
La funzione <function>sin</function> restituisce il seno di <parameter>arg</parameter>.
Il parametro <parameter>arg</parameter> viene espresso in radianti.
</para>
<para>
<example>
<title>Esempio di uso di <function>sin</function></title>
<programlisting role="php">
<![CDATA[
<?php
// La precisione dipende dalle direttive di precisione
echo sin(deg2rad(60)); // 0.866025403 ...
echo sin(60); // -0.304810621 ...
?>
]]>
</programlisting>
</example>
</para>
<para>
Vedere anche:
<function>asin</function>,
<function>cos</function>,
<function>tan</function> e
<function>deg2rad</function>.
</para>
</refsect1>
</refentry>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->