Find the acute angle between the lines `2x-y+3=0\ a n d\ x+y+2=0.`

Explanation

To find the acute angle between the lines given by the equations \(2x - y + 3 = 0\) and \(x + y + 2 = 0\), we can follow these steps:

### Step 1: Convert the equations to slope-intercept form
We need to express both equations in the form \(y = mx + b\) where \(m\) is the slope.

1. For the first equation \(2x - y + 3 = 0\):
\[
-y = -2x - 3 \implies y = 2x + 3
...