1. ## find the coordinates

ABC is any traingle , in a system of (A,AB vector ,AC vector), then calculate the coordinates of A , B ,c.
ok i knew A(0,0) then what about A and B

2. $\vec{AB}=1\vec{AB}+0\vec{AC}$

$\vec{AC}=0\vec{AB}+1\vec{AC}$

Can you conclude?

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