From 8978cd5f3fc31d66cb8051a70674d561a4038d26 Mon Sep 17 00:00:00 2001
From: Sabrina <sbn92017@hotmail.com.tw>
Date: Sun, 25 Oct 2020 16:54:08 +0800
Subject: [PATCH] add sin function

---
 index.html | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 8135a84..b58396a 100644
--- a/index.html
+++ b/index.html
@@ -29,10 +29,14 @@
   function abs(a) {
     return Math.abs(a);
   }
-  
+
   function cos(a) {
     return Math.cos(a)
   }
+
+  function sin(a) {
+    return Math.sin(a);
+  }
 </script>
 </body>
 </html>