<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<!DOCTYPE funcs
  SYSTEM '../../../clonk.dtd'>
<?xml-stylesheet type="text/xsl" href="../../../clonk.xsl"?>
<funcs>
  <func>
    <title>ArcCos</title>
    <category>Arithmetics</category>
    <version>5.1 OC</version>
    <syntax>
      <rtype>int</rtype>
      <params>
        <param>
          <type>int</type>
          <name>value</name>
          <desc>Length of the adjacent leg</desc>
        </param>
        <param>
          <type>int</type>
          <name>radius</name>
          <desc>Length of hypotenuse</desc>
        </param>
      </params>
    </syntax>
    <desc>Calculates arc cosine of value/radius, or x = arccos(value/radius). This corresponds to cos(x) = value/radius. This function is used to calculate an angle from horizontal and vertical offsets. However, in most cases <funclink>Angle</funclink>() does what you need.</desc>
    <related>
      <funclink>Angle</funclink>
      <funclink>ArcSin</funclink>
      <funclink>Cos</funclink>
    </related>
  </func>
  <author>Sven2</author><date>2001-11</date>
</funcs>
