A) 8
B) 4
C) 8
D) 12
Correct Answer: C
Solution :
If given points be \[A,\,\,B,\,\,C\] then \[\overrightarrow{AB}=k(\overrightarrow{BC})\] or \[2\mathbf{i}-8\mathbf{j}=k[(a-12)\mathbf{i}+16\mathbf{j}]\Rightarrow k=\frac{-1}{2}\] Also, \[2=k(a-12)\Rightarrow a=8.\]You need to login to perform this action.
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