For given vectors, `veca =hati+2hatj+3hatk` and `vecb = 2hati+3hatj+5hatk`, find the unit vector in the direction of the vector `veca+vecb`.

Explanation

To find the unit vector in the direction of the vector \(\vec{a} + \vec{b}\), we will follow these steps:

### Step 1: Write down the vectors
Given:
\[ \vec{a} = \hat{i} + 2\hat{j} + 3\hat{k} \]
\[
...