How to graph inverse cofunctions in trigonometry

In the manual, in section "94.3 Syntax for Mathematical Expressions: Functions" in the pgfmanual, the inverse trig functions are there but not the inverse trig cofunctions.

I suppose they’re not common enough to be given like the other functions, but I am wondering if there’s a way to graph them easily? A series expansion would probably be enough for my purposes but while experimenting, I’m having a problem when it curls up and down when x is 1. Maybe I could make a function that merely looks like those inverse cofunctions?

How others would deal with this lack of function?