Php inverse / arc cosine

//thank you rahmatjon
Example:
<?php
    $arg=0.5;
    $val=acos($arg);
    echo "acos(" . $arg . ") = " . $val . " radians.<br/>";
    echo "Pi value = " . pi() . "<br/>";    
    echo "acos(" . $arg . ") = " . $val/pi()*180 . " degrees<br/>";
?>

Source: php.net

Similar codes

1 vote190 views2 answers
Codeigniter query result
PHP CodeIgniter
0 vote177 views1 answer
Php header deny
PHP
0 vote178 views2 answers
Redirect previous page
PHP
2 votes146 views4 answers
Pasar datetime a string php
PHP
0 vote158 views1 answer
Laravel store mail driver info in database
PHP Laravel
2 votes158 views1 answer
Laravel vendor:publish not working
PHP Laravel
4 votes145 views2 answers
Date_default_timezone_set for india in php laravel
PHP
0 vote160 views1 answer
Pegar parte da string php
PHP
0 vote161 views1 answer
Laraodck imagick
PHP
0 vote173 views1 answer
Carbon random future date
PHP