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<html>
<head>
<title>EAGLE Help: Trigonometric Functions</title>
</head>
<body bgcolor=white>
<font face=Helvetica,Arial>
<hr>
<i>EAGLE Help</i>
<h1><center>Trigonometric Functions</center></h1>
<hr>
<dl>
<dt>
<b>Function</b>
<dd>
Trigonometric functions.
<p>
<dt>
<b>Syntax</b>
<dd>
<tt>real acos(real x);</tt><br>
<tt>real asin(real x);</tt><br>
<tt>real atan(real x);</tt><br>
<tt>real cos(real x);</tt><br>
<tt>real sin(real x);</tt><br>
<tt>real tan(real x);</tt>
<p>
<dt>
<b>Returns</b>
<dd>
<tt>acos</tt> returns the arc cosine of <tt>x</tt>.<br>
<tt>asin</tt> returns the arc sine of <tt>x</tt>.<br>
<tt>atan</tt> returns the arc tangent of <tt>x</tt>.<br>
<tt>cos </tt> returns the cosine of <tt>x</tt>.<br>
<tt>sin </tt> returns the sine of <tt>x</tt>.<br>
<tt>tan </tt> returns the tangent of <tt>x</tt>.
<p>
</dl>
<b>Constants</b>
<p>
<table>
<tr><td valign=top><font face=Helvetica,Arial><tt>PI</tt> </font></td><td valign=top><font face=Helvetica,Arial>the value of "pi" (3.14...)</font></td></tr>
</table>
<p>
<b>Example</b>
<pre>
real x = PI / 2;
printf("The sine of %f is %f\n", x, sin(x));
</pre>
<hr>
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<i>Copyright © 2005 CadSoft Computer GmbH</i>
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