A) \[\sqrt{158}\]
B) \[\sqrt{160}\]
C) \[\sqrt{161}\]
D) \[\sqrt{162}\]
Correct Answer: D
Solution :
\[\overline{PQ}=(5-1)\mathbf{i}+(-2-3)\mathbf{j}+(4+7)\mathbf{k}=4\mathbf{i}-5\mathbf{j}+11\mathbf{k}\] \[|\overline{PQ}|=\sqrt{16+25+121}=\sqrt{162}\,.\]You need to login to perform this action.
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