task number 43 from UniLecs

import math as m


def search_refraction(alfa: float, d: int) -> float:
    """
    This function solve that https://vk.com/@unilecs-anons-43-prelomlenie task
    """
    # Значение преломления пластины
    n = 1.5

    # По закону Снеллиуса:
    betta: float = m.asin(m.sin(m.radians(alfa)) / n)

    # По определению тангенса
    x: float = d * m.tan(betta)
    print(x)
    return round(x, 2)


if __name__ == '__main__':
    """
    Automatic testing
    """
    assert search_refraction(30, 5) == 1.77
    assert search_refraction(90, 0) == 0
    assert search_refraction(0, 1) == 0
    assert search_refraction(45, 5) == 2.67