Find a unit vector in the direction of vector `vecA=(hati-2hatj+hatk)`

Explanation

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

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

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