Question

If a = (2.1.-1) 5 =(1,-1,0) = (5.-1.1) then the unit vector parallel to a+b-c but in the opposite direction is
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Answer 1

Step-by-step explanation:

a= (2,1,-1)

b= (1,-1,0) &

c= (5,-1,1)

now a+b-c=(2+1-5, 1-1+1, -1+0-1)=(-2,1,-2)

so unit vector parallel to a+b-c but opposite direction is

(2/3,-1/3,2/3)