If `A(-2,1),B(2,3)a n dC(-2,-4)` are three points, find the angle between `B Aa n dB Cdot`

Explanation

To find the angle between the lines \( BA \) and \( BC \) given the points \( A(-2, 1) \), \( B(2, 3) \), and \( C(-2, -4) \), we will follow these steps:

### Step 1: Find the slopes of lines \( BA \) and \( BC \)

1. **Calculate the slope of line \( BA \)**:
- The formula for the slope \( m \) between two points \( (x_1, y_1) \) and \( (x_2, y_2) \) is:
\[
m = \frac{y_2 - y_1}{x_2 - x_1}
...