A) 1/2
B) -1
C) -1/2
D) 1
Correct Answer: C
Solution :
Dot product of these two vectors should be equal to zero as they are perpendicular to each other. \[\therefore \] \[A\cdot B=-8+12+8\alpha =0\] \[8\alpha =-4\] \[\alpha =\frac{-1}{2}\]You need to login to perform this action.
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