TRONG MẶT PHẲNG OXY, CHO   . KHI ĐÓ A 4AB

Câu 41: Trong mặt phẳng Oxy, Cho





. Khi đó

^a

^



^

⁴



^AB

^

^?



11

;8





a





2







A.

^a

^

^{ }



^22;32



_B.

C.

^a

^

^



^{22; 28}

^



_D.

^a

^

^



^{22; 28}

