Update models_rlgl_solar_system.c

examples/models/models_rlgl_solar_system.c

@@ -14,6 +14,8 @@
 #include "raylib.h"
 #include "rlgl.h"
 
+#include <math.h>           // Required for: cosf(), sinf()
+
 //------------------------------------------------------------------------------------
 // Module Functions Declaration
 //------------------------------------------------------------------------------------