Unit vector perpendicular to \stackrel{\^}{i}-2 \stackrel{\^}{j}+2 \stackrel{\^}{k} and lying in the plane containing \stackrel{\^}{i}+\stackrel{\^}{j}-2 \stackrel{\^}{k} and -\stackrel{\^}{ {\i}}+2 \stackrel{\^}{ {\j}}+\stackrel{\^}{ {\k}} is

Correct Answer is : 1√234(8^i−7^j−11^k)

8 \stackrel{\^}{ {\i}}-7 \stackrel{\^}{ {\j}}+11 \stackrel{\^}{ {\k}}

8 \stackrel{\^}{ {\i}}+7 \stackrel{\^}{ {\j}}-11 \stackrel{\^}{ {\k}}

8 \stackrel{\^}{ {\i}}-7 \stackrel{\^}{ {\j}}-11 \stackrel{\^}{ {\k}}

{1}/{\sqrt{234}}(8 \stackrel{\^}{ {\i}}-7 \stackrel{\^}{ {\j}}-11 \stackrel{\^}{ {\k}})

COMEDK Exam 2018 Solved Paper

Question : 123 of 180

Marks: +1, -0

Unit vector perpendicular to

−2

and lying in the plane containing

−2

and −

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