fixup

1 files changed, 6 insertions, 0 deletions

diff --git a/coding-exercises/2/83.rkt b/coding-exercises/2/83.rkt
index c6f7b68..8ea5442 100644
--- a/coding-exercises/2/83.rkt
+++ b/coding-exercises/2/83.rkt
@@ -277,3 +277,9 @@
 (apply-and-drop 'add
                 1.0
                 (make-complex 1 0))
+
+;; 86
+;; Selectors and constructors of complex numbers packages need to become generic
+;; We can try to raise to real numbers before passing it to the trig functions, but we need to do this for every possible type in the system.
+;; So it is better to let the types themselves define trig functions
+(apply-generic 'angle (make-complex 1 test-rat))