(PHP 4, PHP 5, PHP 7)
sin — 锟斤拷锟斤拷
$arg
) : float
sin() 锟斤拷锟截诧拷锟斤拷 arg 锟斤拷锟斤拷锟斤拷值锟斤拷锟斤拷锟斤拷 arg 锟侥碉拷位为锟斤拷锟饺★拷
arg锟斤拷位锟角伙拷锟饺碉拷值锟斤拷
arg 锟斤拷锟斤拷锟斤拷值
Example #1 sin() 锟斤拷锟斤拷
<?php
// 锟斤拷锟斤拷值锟侥撅拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫碉拷 precision 指示确锟斤拷
echo sin(deg2rad(60)); // 0.866025403 ...
echo sin(60); // -0.304810621 ...
?>