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bearhunter [10]

2 years ago

12

15- pls help!!!! math pls help answer other questions too

1 answer:

ddd [48]2 years ago

3 0

Answer:

A

Step-by-step explanation:

The projection of vector B on unit vector a is

(B•a)a

av(unit vector of v)= 1/√2(-1,1)

u•av= 1/√2 × (-5+7)= √2

(u•av)av= √2 × 1/√2(-1,1)= (-1,1)

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