diff --git a/sin x = 2.md b/sin x = 2.md
index db9c717..03be7d0 100644
--- a/sin x = 2.md	
+++ b/sin x = 2.md	
@@ -19,7 +19,7 @@ $$
 u - u^{-1} = 4i
 $$
 $$
-u^2 - 1 = 4iu \\ $$
+u^2 - 1 = 4iu $$
 $$
 u^2 - 4iu - 1 = 0
 $$