import math

def calculate_distance(time,velocity):
	distance = time*velocity
	return distance

def calculate_time(distance,velocity):
	time = distance/velocity
	return time

def radian_to_degree(r):
	d = (r*180)/Pi
	return d

velocity_Mars = 1.29e6
closest_distance = 124.8e6
Pi = 3.1415

velocity_Rocket = float(input("Velocity of Rocket (miles per days): "))

travel_time = calculate_time(closest_distance,velocity_Rocket)
mars_Distance = calculate_distance(travel_time,velocity_Mars)
radian = math.atan(mars_Distance/closest_distance)
degree = radian_to_degree(radian)

print("The Rocket should be launched at",degree)