11.2.2 acos方法.html

javascript即用即差核心对象手册

<script>
   with(document)
   {
      with(Math)
      {
        write("acos(0)="+acos(0));
        write("<br>acos(1)="+acos(1));
        write("<br>acos(2)="+acos(2));
      }
   }
</script>