Vector Algebra: practice questions

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1. Q1 · easy

   If two vectors $\vec{a} = 2\hat{i} + 3\hat{j} + 6\hat{k}$ and $\vec{b} = 3\hat{i} - 6\hat{j} + 2\hat{k}$ are given, their scalar product $\vec{a} \cdot \vec{b}$ is: