Find the angle between the following pairs of vectors `3hati+2hatj-6hatk, 4hati-3hatj+hatk`, `hati-2hatj+3hatk, 3hati-2hatj+hatk`

Explanation

To find the angle between the given pairs of vectors, we will use the formula for the dot product of two vectors, which relates the dot product to the cosine of the angle between them. The formula is:

\[ \mathbf{A} \cdot \mathbf{B} = |\mathbf{A}| |\mathbf{B}| \cos \theta \]

Where:
- \(\mathbf{A} \cdot \mathbf{B}\) is the dot product of vectors \(\mathbf{A}\) and \(\mathbf{B}\).
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