Convert degree to radianus
<?php
// Degree
$degree = 360;
// Convertion
print cos(deg2rad($degree));
?>
(PHP 4, PHP 5, PHP 7)
cos — 余弦
$arg
) : float
cos() 返回参数 arg
的余弦值。参数 arg 的单位为弧度。
arg以弧度表示的角度
arg的余弦值
Example #1 cos() 例子
<?php
echo cos(M_PI); // -1
?>
Convert degree to radianus
<?php
// Degree
$degree = 360;
// Convertion
print cos(deg2rad($degree));
?>
Convert degree to radianus, radianus to cos.
<?php
// Degree
$degree = 360;
// Convertion
print cos(deg2rad($degree));
?>