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<h3>Funktion cos()</h3>
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Gibt den Cosinus eines Winkels zur&uuml;ck.
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<p><h4>Syntax</h4>
cos(<i>winkel</i>)</p>
<p><h4>Argumente</h4>
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<i>winkel</i> &rarr; Winkel im Bogenma&szlig;.</p>
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<p><h4>Beispiel</h4>
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cos(1.571) &rarr; 0.000796326710733263</p>