diff --git a/librz/include/rz_util/rz_num.h b/librz/include/rz_util/rz_num.h
index 8995b9bf0a..06f09a5cd0 100644
--- a/librz/include/rz_util/rz_num.h
+++ b/librz/include/rz_util/rz_num.h
@@ -101,8 +101,6 @@ RZ_API int rz_num_str_split(char *str);
 RZ_API RzList /*<char *>*/ *rz_num_str_split_list(char *str);
 RZ_API void *rz_num_dup(ut64 n);
 RZ_API size_t rz_num_base_of_string(RzNum *num, RZ_NONNULL const char *str);
-RZ_API double rz_num_cos(double a);
-RZ_API double rz_num_sin(double a);
 RZ_API double rz_num_get_float(RzNum *num, const char *str);
 RZ_API bool rz_num_is_hex_prefix(const char *p);
 
diff --git a/librz/util/unum.c b/librz/util/unum.c
index 96c72c5e62..f846cb76ca 100644
--- a/librz/util/unum.c
+++ b/librz/util/unum.c
@@ -907,14 +907,6 @@ RZ_API void *rz_num_dup(ut64 n) {
 	return (void *)hn;
 }
 
-RZ_API double rz_num_cos(double a) {
-	return cos(a);
-}
-
-RZ_API double rz_num_sin(double a) {
-	return sin(a);
-}
-
 /**
  * \brief Convert the base suffix to the numeric value
  */