add cos funtion

2020-10-25 16:52:27 +08:00 · 2020-10-25 16:52:27 +08:00 · e396b2321a
commit e396b2321a
parent 85202dedd8
1 changed files with 5 additions and 1 deletions
--- a/index.html
+++ b/index.html
@ -29,6 +29,10 @@
  function abs(a) {
    return Math.abs(a);
  }
+  
+  function cos(a) {
+    return Math.cos(a)
+  }
 </script>
 </body>
 </html>