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