diff --git a/src/trigonometricFunctions.c b/src/trigonometricFunctions.c
index 0a9a956..5ff0831 100644
--- a/src/trigonometricFunctions.c
+++ b/src/trigonometricFunctions.c
@@ -3,7 +3,7 @@
 #include "math.h"
 #include <stdio.h>
 #include <stdlib.h>
-
+//function for trigonometric
 double* calculate_sin_double(double angle) {
     double* result= malloc(sizeof (double));
     *result=sin(angle);