text: #!/usr/bin/env python3
  #-*- coding: utf-8 -*-
  import math
  
  def move(x, y, step, angle=0):
      nx = x + step * math.cos(angle)
      ny = y - step * math.sin(angle)
      return nx, ny
  
  '''
  x, y = move(100, 100, 60, math.pi / 6)
  print(x, y)
  '''
  
  r = move(100, 100, 70, math.pi / 6)
  print(r)
  
  