diff --git a/src/c/funktionen.c b/src/c/funktionen.c
index 92f25aa..682bf23 100644
--- a/src/c/funktionen.c
+++ b/src/c/funktionen.c
@@ -83,4 +83,9 @@ int characterAppearanceInString(char c, char string[]) {
 // Function to calculate the sine of an angle in radians
 float sine(float x) {
 	return sin(x);
+}
+
+// Function to calculate the cosine of an angle in radians
+float cosine(float x) {
+	return cos(x);
 }
\ No newline at end of file