Merge pull request keon#14 from stongaf/master

added pythagoras.py to maths

README.md

@@ -109,7 +109,8 @@ List of Implementations:
 │   ├── generate_strobogrammtic.py
 │   ├── is_strobogrammatic.py
 │   ├── nth_digit.py
-│   └── sqrt_precision_factor.py
+│   ├── sqrt_precision_factor.py
+│   └── pythagoras.py
 ├── matrix
 │   ├── bomb_enemy.py
 │   ├── matrix_rotation.txt

math/pythagoras.py

@@ -0,0 +1,16 @@
+"""
+input two of the three side in right angled triangle and return the third. use "?" to indicate the unknown side. 
+"""
+
+def pythagoras(opposite,adjacent,hypotenuse):
+    try:
+        if opposite == str("?"):
+            return ("Opposite = " + str(((hypotenuse**2) - (adjacent**2))**0.5))
+        elif adjacent == str("?"):
+            return ("Adjacent = " + str(((hypotenuse**2) - (opposite**2))**0.5))
+        elif hypotenuse == str("?"):
+            return ("Hypotenuse = " + str(((opposite**2) + (adjacent**2))**0.5))
+        else:
+            return "You already know the answer!"
+    except:
+        print ("Error, check your input. You must know 2 of the 3 variables.")