diff --git a/trigonometry_function.java b/trigonometry_function.java
new file mode 100644
index 0000000..2328660
--- /dev/null
+++ b/trigonometry_function.java
@@ -0,0 +1,11 @@
+public double mysin(double x) {
+		return Math.sin(x);
+	}
+	
+public double mycos(double x) {
+		return Math.cos(x);
+	}
+	
+public double mytan(double x) {
+		return Math.tan(x);
+	}
\ No newline at end of file