Question

Daca AB vector +2CB vector=0 ,determinati valoarea raportului $\frac{AB}{BC}$

Answer 1

[tex]\vec{AB}+2\vec{CB}=0\\ \vec{AB}=-2\vec{CB}\\ \vec{AB}=2\vec{BC}|:\vec{BC}\\ \frac{\vec{AB}}{\vec{BC}}=2[/tex]