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PHP : Function Reference : Mathematical Functions : tan

tan

Tangent (PHP 4, PHP 5)
float tan ( float arg )

Example 1163. tan() example

<?php

echo tan(M_PI_4); // 1

?>

Related Examples ( Source code ) » tan
















Code Examples / Notes » tan

fformula

To find cotangent you can use
 tan (M_PI/2 - $alfa)


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