Find m if the pairs of vectors(2,3,m)and (-3,2.1) are orthogonal.
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Vectors are orthogonal means their dot product is 0.
=> 2*(-3) + 3*2 + m*1 = 0
=> -6 +6 +m = 0
=> m=0
=> 2*(-3) + 3*2 + m*1 = 0
=> -6 +6 +m = 0
=> m=0
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