PHP acosh()函数

acosh() 是预定义的三角函数PHP函数。它用于找到一个数的反双曲线。它返回一个浮点数。

语法

    acosh(number);

示例1

<?php
num=7;
echo "Your number is : ".num;
echo "<br>"."By using 'asinh()' function your number is :".(acosh($num));
?>

输出:

Your number is : 7
By using 'acosh()' function your number is :2.6339157938496

示例2

<?php
num=2.45;
echo "Your number is : ".num;
echo "<br>"."By using 'acosh()' function your number is :".(acosh($num));
?>

输出：

Your number is : 2.45
By using 'acosh()' function your number is :1.5447131178707

示例3

<?php
num=56;
echo "Your number is : ".num;
echo "<br>"."By using 'acosh()' function your number is :".(acosh($num));
?>

输出:

Your number is : 56
By using 'acosh()' function your number is :4.7184191423729