If `vecA= 4hati+nhatj-2hatk and vecB=2hati+3hatj+hatk`, then findt the value of n so that `vecA bot vecB`.

Explanation

To solve the problem, we need to find the value of \( n \) such that the vectors \( \vec{A} \) and \( \vec{B} \) are perpendicular. This condition can be expressed using the dot product of the two vectors.

### Step-by-Step Solution:

1. **Write down the vectors:**
\[ \vec{A} = 4\hat{i} + n\hat{j} - 2\hat{k} \]
...