import tkinter
import math

root = tkinter.Tk()
root.title('用三角函數畫圖')
canvas = tkinter.Canvas(width = 600, height = 600, bg = 'black')
canvas.pack()

COL = ['greenyellow', 'limegreen', 'aquamarine', 'cyan', 'deepskyblue', 'blue', 'blueviolet', 'violet']

for d in range(0, 360):
    x = 250 * math.cos(math.radians(d))
    y = 250 * math.sin(math.radians(d))
    canvas.create_line(300, 300, 300 + x, 300 + y, fill = COL[d % 8], width = 2)

root.mainloop()