Distance and angle between two cartesian points

pointdist

#!/usr/bin/env python3

import math
import sys

def calculate_distance(x1, y1, x2, y2):
    angle = calculate_angle(x1, y1, x2, y2)
    return abs(y2 - y1) / math.sin(math.radians(angle))

def calculate_angle(x1, y1, x2, y2):
    dx = x2 - x1
    dy = y2 - y1
    return math.degrees(math.atan2(dy, dx))

def print_point_info(x1, y1, x2, y2, label):
    distance = calculate_distance(x1, y1, x2, y2)
    angle = calculate_angle(x1, y1, x2, y2)
    print(label)
    print(f"  Distance: {distance:.2f} units")
    print(f"  Angle   : {angle:.2f} degrees")
    print(f"          : {math.radians(angle):.8f} radians")

if len(sys.argv) != 5:
    print("Usage: pointdist x1 y1 x2 y2")
    sys.exit(1)

x1, y1, x2, y2 = map(float, sys.argv[1:])

print_point_info(x1, y1, x2, y2, "Point A-B")
print_point_info(x2, y2, x1, y1, "Point B-A")