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Toán 10: Cho hai vectơ a ⃗,b ⃗ thỏa mãn |a ⃗ |=26,|b ⃗ |=28;|a ⃗+b ⃗ |=48 Tìm |a ⃗-b ⃗ | bằng?
1 month ago
26
Cho hai vectơ a ⃗,b ⃗ thỏa mãn
|a ⃗ |=26,|b ⃗ |=28;|a ⃗+b ⃗ |=48
Tìm |a ⃗-b ⃗ | bằng?
A.25 B.√616 C.9 D.√618
#Vector
#Vecto
#ToanHinhHoc
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