Let a =2 i + j + k , b = i +2 j - k and a unit vector be coplanar. If is perpendicular to…
Mathematics · JEE Advanced · NTA Exams — Vector Algebra
Let \(\vec{a}=2 \hat{i}+\hat{j}+\hat{k}, \vec{b}=\hat{i}+2 \hat{j}-\hat{k}\)and a unit vector 
be coplanar. If is perpendicular to 
, then =
be coplanar. If is perpendicular to , then =
Answer
(A)
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