Вектора
vector{a}*vector{b}=|vector{a}|*|vector{b}|*cos( ∠ vector{a},vector{b}) ⇒ cos( ∠ vector{a},vector{b})=6/(2*3)=1 [b]∠ vector{a},vector{b}=0[/b] ⇒ sin( ∠ vector{a},vector{b})=6/(2*3)=0 |vector{a} × vector{b}|=|vector{a}|*|vector{b}|*sin( ∠ vector{a},vector{b})=0