Posted by Anonymous on Wednesday, August 1, 2012 at 4:32pm.
Calculate the dot product of the three pairs of vectors. If the dot product is zero, the vectors are orthogonal.
For example,
(i)<18,-3>.<-1,-6>=-18+18=0
So pair (i) is orthogonal.
Post your answer for checking if you wish.
v•w = 0 if v┴w
18i−3j • −i−6j = 0
15i−2j • −4i+30j = -120
3i−j • i+3j = 0
Can you take it from here?
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