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.. _arduino-cos:
cos(rad)
========
Description
-----------
Calculates the cos of an angle (in radians). The result will be
between -1 and 1.
Parameters
----------
rad: the angle in radians (*float*)
Returns
-------
The cos of the angle ("double")
See also
--------
- `sin <http://arduino.cc/en/Reference/Sin>`_\ ()
- `tan <http://arduino.cc/en/Reference/Tan>`_\ ()
- `float <http://arduino.cc/en/Reference/Float>`_
- `double <http://arduino.cc/en/Reference/Double>`_
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