User:Aprogressivist/Mathstuff From Wikipedia, the free encyclopedia Reminders: a × b = a b sin θ n ^ {\displaystyle \mathbf {a} \times \mathbf {b} =ab\sin \theta \ \mathbf {\hat {n}} } a ⋅ b = | a | | b | cos θ {\displaystyle \mathbf {a} \cdot \mathbf {b} =|\mathbf {a} |\,|\mathbf {b} |\cos \theta \,} Related Articles