Find the direction cosines of the vector `hati+2hatj+3hatk`.

Explanation

To find the direction cosines of the vector \( \mathbf{a} = \hat{i} + 2\hat{j} + 3\hat{k} \), we will follow these steps:

### Step 1: Identify the components of the vector
The given vector can be expressed in terms of its components:
- Coefficient of \( \hat{i} \) (x-component) = 1
- Coefficient of \( \hat{j} \) (y-component) = 2
- Coefficient of \( \hat{k} \) (z-component) = 3

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