Using the identity $ \mathbfa \times (\mathbfv \times \mathbfa) = (\mathbfa \cdot \mathbfa)\mathbfv - (\mathbfa \cdot \mathbfv)\mathbfa $, and since $ \mathbfa \cdot \mathbfv = 0 $, this becomes: - AMAZONAWS

📅 March 11, 2026 👤 scraface

Mar 11, 2026

$Using the identity $ \mathbf{a} \times (\mathbf{v} \times \mathbf{a}) = (\mathbf{a} \cdot \mathbf{a})\mathbf{v} - (\mathbf{a} \cdot \mathbf{v})\mathbf{a} $, and since $ \mathbf{a} \cdot \mathbf{v} = 0 $, this becomes:$