new_contents: """
  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):
  	if opposite == str("?"):
  		print ("Solving for opposite")
  		return ((h**2) - (a**2))**0.5
  	elif adjacent == str("?"):
  		print ("Solving for adjacent")
  		return ((h**2) - (o**2))**0.5
  	elif hypotenuse == str("?"):
  		print ("Solving for hypotenuse")
  		return ((o**2)+(a**2))**0.5
  	else:
  		return "you already know the answer!"
  
subject: Create pythagoras.py