function.acos.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Arkuskosinus</title>
</head>
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</div><hr /><div id="function.acos" class="refentry">
<div class="refnamediv">
<h1 class="refname">acos</h1>
<p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">acos</span> — <span class="dc-title">Arkuskosinus</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.acos-description">
<h3 class="title">Beschreibung</h3>
<div class="methodsynopsis dc-description">
<span class="type">float</span> <span class="methodname"><strong>acos</strong></span>
( <span class="methodparam"><span class="type">float</span> <code class="parameter">$arg</code></span>
)</div>
<p class="para rdfs-comment">
Berechnet den Arkuskosinus des Parameters <code class="parameter">arg</code>.
<span class="function"><strong>acos()</strong></span> ist die Komplementärfunktion zu
<span class="function"><a href="function.cos.html" class="function">cos()</a></span>, d.h. innerhalb des Wertebereichs von
<span class="function"><strong>acos()</strong></span> gilt <em>a==cos(acos(a))</em>.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.acos-parameters">
<h3 class="title">Parameter-Liste</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">arg</code></dt>
<dd>
<p class="para">
Der zu verarbeitende Wert
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.acos-returnvalues">
<h3 class="title">Rückgabewerte</h3>
<p class="para">
Der Arkuskosinus von <code class="parameter">arg</code> in Bogenmaß
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.acos-seealso">
<h3 class="title">Siehe auch</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><span class="function"><a href="function.cos.html" class="function" rel="rdfs-seeAlso">cos()</a> - Kosinus</span></li>
<li class="member"><span class="function"><a href="function.acosh.html" class="function" rel="rdfs-seeAlso">acosh()</a> - Areakosinus Hyperbolikus</span></li>
<li class="member"><span class="function"><a href="function.asin.html" class="function" rel="rdfs-seeAlso">asin()</a> - Arkussinus</span></li>
<li class="member"><span class="function"><a href="function.atan.html" class="function" rel="rdfs-seeAlso">atan()</a> - Arkustangens</span></li>
</ul>
</p>
</div>
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