Find the unit vector in the direction of the difference of vector `(veca-vecb),veca=4hati+5hatj+6hatk` and `vecb=2hati+3hatj+4hatk`.

Explanation

To find the unit vector in the direction of the difference of two vectors \(\vec{A}\) and \(\vec{B}\), we will follow these steps:

### Step 1: Write down the given vectors
The vectors are given as:
\[ \vec{A} = 4\hat{i} + 5\hat{j} + 6\hat{k} \]
\[
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