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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.7 $ -->
<!-- splitted from ./en/functions/math.xml, last change in rev 1.2 -->
<refentry id="function.sin">
<refnamediv>
<refname>sin</refname>
<refpurpose>Sine</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>float</type><methodname>sin</methodname>
<methodparam><type>float</type><parameter>arg</parameter></methodparam>
</methodsynopsis>
<para>
<function>sin</function> returns the sine of the <parameter>arg</parameter>
parameter. The <parameter>arg</parameter> parameter is in radians.
</para>
<para>
<example>
<title><function>sin</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
// Precision depends on your precision directive
echo sin(deg2rad(60)); // 0.866025403 ...
echo sin(60); // -0.304810621 ...
?>
]]>
</programlisting>
</example>
</para>
<para>
See also:
<function>asin</function>,
<function>cos</function>,
<function>tan</function>, and
<function>deg2rad</function>.
</para>
</refsect1>
</refentry>
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sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
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sgml-parent-document:nil
sgml-default-dtd-file:"../../../../manual.ced"
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End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->
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