tan — Provides the tangent for the given radians.
float fl: Value to be
Tangent of a value in radians
Returns the tangent of a value in radians.
Example 694. Calculate the
tangent of a value
$rads = 2 * (pi() / 3); // a 120 degree arc
$rtan = tan($trad);
echo "The tangent of $rads is $rtan\n";
PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing
(Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch).
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