added test for conversion from radian to degree with some tolerance as well as corresponding functionality

src/main/py/trigonometry.py

@@ -0,0 +1,3 @@
+import math
+def rad2deg(radNumber):
+    return (radNumber * 180) / math.pi

src/test/py/test_trigonometry.py

@@ -0,0 +1,20 @@
+import unittest
+from src.main.py.trigonometry import *
+
+
+class MyTestCase(unittest.TestCase):
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_rad_2_to_deg_should_be_114_point_59(self):
+        delta = rad2deg(2) - 114.59
+        if delta < 0:
+            delta *= -1
+        self.assertLess(delta, 0.01)
+
+
+if __name__ == '__main__':
+    unittest.main()