#!/usr/bin/env python
# -*- coding: utf-8 -*-
from math import sqrt

import numpy

try:
    input = raw_input
except NameError:
    pass


def get_numeric_value(prompt):
    """
    Requests a numeric value from the standard input.
    Returns None if no value was inserted.
    """
    while True:
        value = input(prompt)
        if not value:
            return None
        try:
            value = int(value)
        except ValueError:
            print("Debe ingresar un valor numerico. "
                  "Vuelva a intentarlo.")
        else:
            break
    return value


def get_triangle(a=None, b=None, h=None):
    """
    Returns a triangle string, with the specified values.
    """
    return r"""
    |\
    | \
    |  \ h
  a |   \
    |    \
    |_ _ _\
      b

    a = %s
    b = %s
    h = %s""" % ("?" if a is None else a,
                 "?" if b is None else b,
                 "?" if h is None else h)


def main():
    print(get_triangle())
    print("\nDeje en blanco el valor que desconoce.\n")

    a = get_numeric_value("a: ")
    b = get_numeric_value("b: ")

    if a is None or b is None:
        h = get_numeric_value("h: ")
    else:
        h = None

    if (bool(a) + bool(b) + bool(h)) < 2:
        print("Debe especificar, al menos, dos valores.")
        return 0

    if h is None:
        h = sqrt(a ** 2 + b ** 2)
    elif a is None:
        a = sqrt(h ** 2 - b ** 2)
    elif b is None:
        b = sqrt(h ** 2 - a ** 2)

    anguloMenor = numpy.arccos(((h * h) + (a * a) - (b * b)) / (2 * h * a))
    final = numpy.rad2deg(anguloMenor)
    anguloMayor = 90 - final

    print("")
    print(get_triangle(a, b, h))

    print('el angulo menor de su triangulo rectangulo es: ', (final), '°')
    print('el angulo mayor de su triangulo rectangulo es: ', anguloMayor, '°')

    return 0


if __name__ == '__main__':
    main()