From 41b9feadd952a0092a9dfc436ecf6b77ae8e1206 Mon Sep 17 00:00:00 2001
From: Solomon Foster <colomon@gmail.com>
Date: Tue, 16 Feb 2010 10:18:13 -0500
Subject: [PATCH] Implement acotan.

---
 src/core/Num.pm | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/core/Num.pm b/src/core/Num.pm
index a276a98e41a..5ab994fbd45 100644
--- a/src/core/Num.pm
+++ b/src/core/Num.pm
@@ -154,6 +154,10 @@ augment class Num {
         1 / self.tan($base);
     }
 
+    multi method acotan($base = 'radians') {
+        (1 / self).atan($base);
+    }
+
     multi method cotanh($base = 'radians') {
         1 / self.tanh($base);
     }