For any vector a→, prove that i^×(a→×i^)+ j^×(a→×j^)+k^×(a→×k^) = 2a→

For any vector $\vec{a}, p r o v e t h a t \hat{i} \times (\vec{a} \times \hat{i}) + \hat{j} \times (\vec{a} \times \hat{j}) + \hat{k} \times (\vec{a} \times \hat{k}) = 2 \vec{a}$

Matching exercise

Match the items on the right to the items on the left.

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STEP 5