Arctan() is one of my favourite functions, and since I hold the opinion that mathematical/trigonometric functions are over-used and under-appreciated, I thought that I would devote some disk space to Arctan(). Besides, I think this may actually be the first Arctan() Appreciation Home Page in existence, and it's makes it all worthwhile to do something original. Right?
Update: (2001/10/16)
It's now been several years since I first posted this page back in 1995.
Little did I then realize that I was destined to become such an authority on
the arctan function -- at least according to the internet community.
In fact, while these pages were hosted at the University of Waterloo, searching Google for "arctan" turned up this site as the first hit. Searching for my userid "jdhildeb" turns up numerous references to this site, including being listed as a reference work in several papers.
So, as a sort of celebration of how I have been blessed by Arctan(), I'd like to post a few of my favourite pieces of correspondence from the last several years.
tan(x) = y implies arctan(y) = xfor all x.
