import math


def get_line_coords(n, radius):
  """Compute coordinates for n+1 lines of length radius, starting at the origin
     going clockwise from 9 o'clock to 3 o'clock.
     
     Returns: an array with 100 tuples of the form (x,y)
  """
  a=[0]*(n+1)
  step_rad = math.pi / n
  angle = 0
  for i in range(n+1):
    a[i] = (int(radius * math.cos(angle)), int(radius * math.sin(angle)))
    angle += step_rad
  return a