Fix error in sin-cos.js test introduced in r7129.

Review URL: http://codereview.chromium.org/6659034

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7133 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/mjsunit/sin-cos.js

@@ -33,7 +33,7 @@ function sinTest() {
 }
 
 function cosTest() {
-  assertEquals(0, Math.cos(1));
+  assertEquals(1, Math.cos(0));
   assertEquals(-1, Math.cos(Math.PI));
 }