Find unit vectors along `overset(rarr)A=hat I + hat j - 2 hat k` and `overset(rarr)B=hat I +2 hat j -hat k`

Explanation

To find the unit vectors along the vectors \(\overset{\rarr}{A} = \hat{i} + \hat{j} - 2\hat{k}\) and \(\overset{\rarr}{B} = \hat{i} + 2\hat{j} - \hat{k}\), we will follow these steps:

### Step 1: Find the magnitude of vector \(\overset{\rarr}{A}\)

The magnitude of a vector \(\overset{\rarr}{A} = a\hat{i} + b\hat{j} + c\hat{k}\) is given by the formula:
\[ |\overset{\rarr}{A}| = \sqrt{a^2 + b^2 + c^2} \]
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