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+.. _arduino-tan:
+
+tan(rad)
+========
+
+Description
+-----------
+
+Calculates the tangent of an angle (in radians). The result will be
+between negative infinity and infinity.
+
+
+
+Parameters
+----------
+
+rad: the angle in radians (*float*)
+
+
+
+Returns
+-------
+
+The tangent of the angle (*double*)
+
+
+
+See also
+--------
+
+
+-  `sin <http://arduino.cc/en/Reference/Sin>`_\ ()
+-  `cos <http://arduino.cc/en/Reference/Cos>`_\ ()
+-  `float <http://arduino.cc/en/Reference/Float>`_
+-  `double <http://arduino.cc/en/Reference/Double>`_