Question

I will mark u as brainlist I want this ans

Answer 1

Answer:

Step-by-step explanation:

NOW   a +b = i + 2j  +k

           a- b = i -k

now you want the perpendicular vector of these two

so cross multiply  the two

u get -2i +2j +k  

find modulus      

that is 3    

so unit vector   is (1/3)(-2i+2j+k)

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