The FunctionAdvisor(known_functions) command returns a list of the mathematical function's names implemented in the Maple system.

The functions on which information is available via
    > FunctionAdvisor( function_name );
are:

arccot belongs to the subclass "arctrig" of the class "elementary" and so, in principle, it can be related to various of the 26 functions of those classes - see FunctionAdvisor( "arctrig" ); and FunctionAdvisor( "elementary" );