diff --git a/source/angles.cpp b/source/angles.cpp
index 9d9a361..6007d1c 100644
--- a/source/angles.cpp
+++ b/source/angles.cpp
@@ -1,6 +1,7 @@
 //
 // Created by vlad on 11/6/23.
 //
+#define _USE_MATH_DEFINES
 #include "uml/angles.h"
 #include <cmath>