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diff --git a/docs/source/lang/sin.rst b/docs/source/lang/sin.rst
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--- a/docs/source/lang/sin.rst
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-.. _lang-sin:
-
-sin()
-=====
-
-Calculates the `sine <http://en.wikipedia.org/wiki/Sine>`_ of an
-angle.
-
-Library Documentation
----------------------
-
-.. doxygenfunction:: sin
-
-Arduino Compatibility
----------------------
-
-The Maple version of ``sin()`` is compatible with Arduino.
-
-Note that the Maple implementation comes from `newlib
-<http://sourceware.org/newlib/>`_\ , while Arduino's is that of
-`avr-libc <http://avr-libc.nongnu.org/>`_\ .
-
-See Also
---------
-
--  :ref:`cos <lang-cos>`
--  :ref:`tan <lang-tan>`
--  :ref:`float <lang-float>`
--  :ref:`double <lang-double>`
-
-
-.. include:: cc-attribution.txt