Get arc tangent of different numbers with the atan() function in PHP

Description

The following code shows how to get arc tangent of different numbers with the atan() function.

Example

//from   www .j a va  2s. co  m
<?php
    echo(atan(0.50) . "<br>");
    echo(atan(-0.50) . "<br>");
    echo(atan(5) . "<br>");
    echo(atan(-5) . "<br>");
    echo(atan(100) . "<br>");
    echo(atan(-100));
?>

The code above generates the following result.