The Geometry of the Power Series for Trig Functions

When you (like I) think that the trig functions are best understood as segments within the Complete Triangle, you tend to believe that just about every important fact about those functions has a nifty geometric interpretation. (See other posts in this category.) Why shouldn’t we expect this to be true of the functions’ power series? […]

Posted 17 July, 2012 by in Open Question, Trigonography