You could string together Cos and ASin components, but it really amounts to about the same thing as writing an expression with Cos() and ASin() functions. Why are you looking for another way to do this?
trying to generate geometries based on parametric equations/mathematical surfaces, and hopefully expand them to physics equations/ structural formulas, where there are a large numbers of variables can be inputed.
Ive used the Math-surfaces plugin for Rhino, but there are equations I would like to solve for in Rhino that they dont cover.
The reason Im looking for a technique over a solution, is so I can apply and explore the many possibilities.
The most flexible solution is to write the equations inside a VB or C# script component. That way you could even reference external math libraries and use those functions.
VB and C# components can have any number of input parameters you want.