Python Programming:

a) Binary Tree. Write a function in file pl.py with signature binary_tree(depth, length) that draws a binary tree figure like that from Figure 1 using the turtle module. The figure produced is similar to the example from the textbook with a significant difference that you will notice immediately: the left branches align on a right(60) angle from the vertical and the right branches all align on a left(60) angle from the vertical. The binary tree drawing must look like that from Figure 1, except the dots are NOT required