import matplotlib.pyplot as plt
import numpy as np

def arbre(n, a, r,  x, y):
    if n == 1:
        X = np.round([x, x + r*np.cos(a)], 2)
        Y = np.round([y, y + r*np.sin(a)], 2)
        plt.plot(X, Y, 'green')
       
        
     
    
    else:
        arbre(1, a, r, x, y)
        arbre(n-1, a + np.pi/5, r*0.8,  x + r*np.cos(a), y + r*np.sin(a))
        arbre(n-1, a - np.pi/4, r*0.7, x + r*np.cos(a), y + r*np.sin(a))
        
        
arbre(5, np.pi/2, 1,  0 , 0)
plt.axis("square")
plt.show()