HackerRank Find Angle MBC solution in python

In this HackerRank Find Angle MBC problem solution in python, Point M is the midpoint of hypotenuse AC. You are given the lengths AB and BC. Your task is to find ∠MBC (angle 0°, as shown in the figure) in degrees.

Problem solution in Python 2 programming.

# Enter your code here. Read input from STDIN. Print output to STDOUT
import math
ab = float(raw_input())
bc = float(raw_input())
tang = ab / bc
rad = math.atan(tang)
print '{}°'.format(int(round(math.degrees(rad))))

Problem solution in Python 3 programming.

# Enter your code here. Read input from STDIN. Print output to STDOUT
import math
a = int(input())
b = int(input())
M = math.sqrt(a**2+b**2)
theta = math.acos(b/M )
print(str(round(math.degrees(theta)))+'°')

Problem solution in pypy programming.

# Enter your code here. Read input from STDIN. Print output to STDOUT
import math

n = input()
m = input()

print str(int(round(math.degrees(math.atan2(n,m))))) + u'N{DEGREE SIGN}'

Problem solution in pypy3 programming.

# Enter your code here. Read input from STDIN. Print output to STDOUT
import math
AB = float(input())
BC = float(input())

print(str(int(round(math.degrees(math.atan2(AB, BC)))))+'°')