Get the arc cosine of different numbers in PHP
Description
The following code shows how to get the arc cosine of different numbers.
Example
/* ww w . j a v a 2s . c o m*/
<?php
echo(acos(0.64) . "<br>");
echo(acos(-0.4) . "<br>");
echo(acos(0) . "<br>");
echo(acos(-1) . "<br>");
echo(acos(1) . "<br>");
echo(acos(2));
?>
The code above generates the following result.
