import math

user = input("are you using sin")
if user == 'yes':
    user_3 = input("which side is unknown")
    if user_3 == 'opposite':
        user_1 = int(input("what is the hypotenuse"))
        ang = float(input("what's your angle ?: "))
        the_divided_num = float(180 / ang)
        x = math.sin(math.pi / the_divided_num)

    answer = (x * user_1)
    print(f"this is your missing side is {answer}")

elif user_3 == 'hypotenuse':
    user_4 = int(input("what is the opposite "))
    angle = float(input("what's your angle ?: "))
    the_divided_num = float(180 / angle)
    x_1 = math.sin(math.pi / the_divided_num)

    answe = (x_1 / user_4)
    print(f"this is your missing side is {answe}")