In other words, if $\mathbf{v} \cdot \mathbf{w} = 0$, then $\mathbf{v}$ and $\mathbf{w}$ are orthogonal.
Now, let's consider the angle between the two vectors. The angle between two vectors can be found using the formula:
$\cos \theta = \frac{\mathbf{v} \cdot
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