Find the unit vector in the direction of the vector `veca=hati+hatj+2hatk`.

Explanation

To find the unit vector in the direction of the vector \(\vec{a} = \hat{i} + \hat{j} + 2\hat{k}\), we will follow these steps:

### Step 1: Write down the vector
The given vector is:
\[ \vec{a} = \hat{i} + \hat{j} + 2\hat{k} \]

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