11.2.18 tan方法.html

javascript即用即差核心对象手册

<script>
   with(document)
   {
      with(Math)
      {
        write("tan(0)="+tan(0));
        write("<br>tan(1)="+tan(1));
        var str="tan(atan(1))="+tan(atan(1));
        write("<br>"+str);
      }
   }
</script>