Are you familiar with Visual Complex Analysis? Your spiral motion intuition is really cool and complements the amplitwist model that book introduced me to nice

Are you familiar with Visual Complex Analysis? Your spiral motion intuition is really cool and complements the amplitwist model that book introduced me to nicely. On a random tangent, one of the reasons why I love Common Lisp is that it has functions like CIS[1] in its library. That got me realizing you can literally view SIN and COS as CAR and CDR for what's essentially a cons of non-Complex numbers. I don't claim there's any benefit to doing so, but it's not wrong. [1] http://clhs.lisp.se/Body/f_cis.htm http://clhs.lisp.se/Body/f_cis.htm