<function name="cos" parent="math" type="libraryfunc"> <description>Returns the [cosine](https://en.wikipedia.org/wiki/Trigonometric_functions#cos) of given angle.</description> <realm>Shared and Menu</realm> <args> <arg name="number" type="number">Angle in radians</arg> </args> <rets> <ret name="" type="number">Cosine of given angle</ret>⤶ <ret name="" type="number">Cosine of given angle in the range (-1, 1)</ret>⤶ </rets> </function> <example> <description>Prints the cosine of 3.14159265 (Pi)</description> <code>print( math.cos( 3.14159265 ) )</code> <output>-1</output> </example>