import math

print("Humorhenker AOB calc script")
print("---------------------------")

print("Enter height (in m)")
height = float(input())
print("Enter length (in m)")
length = float(input())

print("Enter vertical marks")
vertical = float(input())
print("Enter horizontal marks")
horizontal = float(input())

try:
    aob = math.degrees(math.asin(height/length*horizontal/vertical*1.745))
except ValueError:
    print("ValueError | AOB close to 90°")

print("Ship already passed?")
passed = input()
if (passed in ["y", "Y", "yes", "Yes", "j", "J", "ja", "Ja"]): aob = 180-aob

print("---------------------------")
print("AOB is %s°" % round(aob, 2))