diff --git a/src/main/py/trigonometry.py b/src/main/py/trigonometry.py
index 3bfddac..a2616b8 100644
--- a/src/main/py/trigonometry.py
+++ b/src/main/py/trigonometry.py
@@ -15,7 +15,7 @@ def rad2deg(radNumber):
     return (radNumber * 180) / math.pi
 
 def deg2rad(degNumber):
-    return degNumber
+    return (degNumber * math.pi) / 180
 
 def sin_approx_bhaskara(radNumber):
     shallFlipTheResult = False  #the bhaskara function can only be used between zero and pi. For the rest of the sin period I simply mirrored the first arch of the curve to match the actual sine wave
diff --git a/src/test/py/test_trigonometry.py b/src/test/py/test_trigonometry.py
index 9045e49..3a347d4 100644
--- a/src/test/py/test_trigonometry.py
+++ b/src/test/py/test_trigonometry.py
@@ -40,6 +40,12 @@ class MyTestCase(unittest.TestCase):
     def test_0_deg_to_rad_should_be_0(self):
         self.assertEqual(deg2rad(0), 0)
 
+    def test_360_deg_to_rad_should_be_2pi(self):
+        delta = deg2rad(360) - math.pi*2
+        if delta < 0:
+            delta *= -1
+        self.assertLess(delta, 0.01)
+
     def test_sin_0_should_be_0(self):
         self.assertEqual(sin_approx_bhaskara(0), 0)