Math.atan 方法实例

该例子取得不同数的反正切值：

<script language="JavaScript">

document.write( Math.atan(0.35) + "<br />" );
document.write( Math.atan(10) + "<br />" );
document.write( Math.atan(-10) + "<br />" );
document.write( Math.atan(0) );

</script>

运行该例子，输出：

0.33667481938672716
1.4711276743037347
-1.4711276743037347
0