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<p><strong>Reference</strong> <a class='wikilink' href='index.html'>Language</a> | <a class='wikilink' href='Libraries.html'>Libraries</a> | <a class='wikilink' href='Comparison.html'>Comparison</a> | <a class='wikilink' href='Changes.html'>Changes</a>
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<p class='vspace'></p><h2>cos(rad)</h2>
<h4>Description</h4>
<p>Calculates the cos of an angle (in radians). The result will be between -1 and 1.<br />
</p><h4>Parameters</h4>
<p>rad: the angle in radians (<em>float</em>)
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<p class='vspace'></p><h4>Returns</h4>
<p>The cos of the angle ("double")
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<p class='vspace'></p><h4>See also</h4>
<ul><li><a class='wikilink' href='Sin.html'>sin</a>()
</li><li><a class='wikilink' href='Tan.html'>tan</a>()
</li><li><a class='wikilink' href='Float.html'>float</a>
</li><li><a class='wikilink' href='Double.html'>double</a>
</li></ul><p class='vspace'></p><p><a class='wikilink' href='index.html'>Reference Home</a>
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<p class='vspace'></p><p><em>Corrections, suggestions, and new documentation should be posted to the <a class='urllink' href='http://arduino.cc/forum/index.php/board,23.0.html' rel='nofollow'>Forum</a>.</em>
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<p class='vspace'></p><p>The text of the Arduino reference is licensed under a
<a class='urllink' href='http://creativecommons.org/licenses/by-sa/3.0/' rel='nofollow'>Creative Commons Attribution-ShareAlike 3.0 License</a>. Code samples in the reference are released into the public domain.
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