#menu driven calculator with math functions
import math
def add(x, y):
  return x + y

def subtract(x, y):
  return x - y

def multiply(x, y):
  return x * y

def divide(x, y):
  if y != 0:
    return x / y
  else:
    return "Cannot divide by zero"

def square_root(x):
  return math.sqrt(x)

def cube_root(x):
  return math.cbrt(x)

def sine(x):
  return math.sin(x)  
def calculator():
  print("Simple Calculator")
  print("1. Addition")
  print("2. Subtraction")
  print("3. Multiplication")
  print("4. Division")
  print("5. Square Root")
  print("6. Cube Root")
  print("7. Sine")

  try:
    choice = int(input("Enter choice (1/2/3/4/5/6/7): "))
    if choice not in [1, 2, 3, 4, 5, 6, 7]:
      print("Invalid choice. Please enter a number between 1 and 7.")
      return

    if choice in [1, 2, 3, 4]:
      num1 = float(input("Enter first number: "))
      num2 = float(input("Enter second number: "))
    else:
      num1 = float(input("Enter a number: "))

    if choice == 1:
      print(num1, "+", num2, "=", add(num1, num2))
    elif choice == 2:
      print(num1, "-", num2, "=", subtract(num1, num2))
    elif choice == 3:
      print(num1, "*", num2, "=", multiply(num1, num2))
    elif choice == 4:
      print(num1, "/", num2, "=", divide(num1, num2))
    elif choice == 5:
      print(num1, "**(1/2)", "=", square_root(num1))
    elif choice == 6:
      print(num1, "**(1/3)", "=", cube_root(num1))
    elif choice == 7:
      print("Sine of", num1, "radians =", sine(num1))

  except ValueError:
    print("Invalid input. Please enter valid numbers.")

calculator()