input: Write a python function to verify whether the specified tuples include the value k.
  assert check_in_tuple((10, 4, 5, 6, 8), 6) == True
  assert check_in_tuple((1, 2, 3, 4, 5, 6), 7) == False
  assert check_in_tuple((7, 8, 9, 44, 11, 12), 11) == True
output: def check_in_tuple(tup, k):
      return k in tup