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<title>fr:tan [BASIC 256 - Language Documentation]</title>
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<h1><a href="start.html" accesskey="h" title="[H]"><img src="lib/tpl/dokuwiki/images/logo.png" width="64" height="64" alt="" /> <span>BASIC 256 - Language Documentation</span></a></h1>
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<h3 class="toggle">Table of Contents</h3>
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<li class="level2"><div class="li"><a href="fr_tan.html#tan">Tan</a></div>
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<li class="level3"><div class="li"><a href="fr_tan.html#format">Format</a></div></li>
<li class="level3"><div class="li"><a href="fr_tan.html#description">Description</a></div></li>
<li class="level3"><div class="li"><a href="fr_tan.html#remarque">Remarque</a></div></li>
<li class="level3"><div class="li"><a href="fr_tan.html#voir_aussi">Voir Aussi</a></div></li>
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<h2 class="sectionedit1" id="tan">Tan</h2>
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<h3 class="sectionedit2" id="format">Format</h3>
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<p>
<strong>tan</strong> ( <em>expression</em> )
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<h3 class="sectionedit3" id="description">Description</h3>
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<p>
Calcul et retourne la tangente de <em>expression</em> qui doit être donné en radians.
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<h3 class="sectionedit4" id="remarque">Remarque</h3>
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<p>
La fonction tangente ne produit pas un résultat exacte.
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<h3 class="sectionedit5" id="voir_aussi">Voir Aussi</h3>
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<a href="fr_acos.html" class="wikilink1" title="fr:acos">Acos</a>, <a href="fr_asin.html" class="wikilink1" title="fr:asin">Asin</a>, <a href="fr_atan.html" class="wikilink1" title="fr:atan">Atan</a>, <a href="fr_sin.html" class="wikilink1" title="fr:sin">Sin</a>, <a href="fr_cos.html" class="wikilink1" title="fr:cos">Cos</a>, <a href="fr_degrees.html" class="wikilink1" title="fr:degrees">Degrees</a>, <a href="fr_radians.html" class="wikilink1" title="fr:radians">Radians</a>
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<h3 class="sectionedit6" id="example">Example</h3>
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<pre class="code">clg
color black
# On trace l'axe des x
line 0,150,300,150
# on calcul le premier point
lastx = 0
lasty = tan(0) * 50 + 150
# on trace une ligne entre chaque point de la courbe
for x = 0 to 300 step 5
angle = x / 300 * 2 * pi
y = tan(angle) * 50 + 150
line lastx, lasty, x, y
lastx = x
lasty = y
next x</pre>
<p>
Donnera le résultat suivant:<br/>
<a href="http://doc.basic256.org/lib/exe/detail.php?id=fr_tan&media=fr:tan.jpg" class="media" title="fr:tan.jpg"><img src="lib/exe/fr_tan.jpg" class="media" title="tan.jpg" alt="tan.jpg" /></a>
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<div class="docInfo"><bdi>fr/tan.txt</bdi> · Last modified: 2013/08/20 17:37 by <bdi>philrich123</bdi></div>
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