VectorHard
Question
The vector(s) which is/are coplanar with vectors 
and perpendicular to the vector
is/are
and perpendicular to the vector is/areOptions
A.
B.
C.
D.
Solution
Any vector in the plane of 
and 
is 
Also,
= 0 ⇒ λ + μ = 0
⇒
and is Also,
= 0 ⇒ λ + μ = 0 ⇒
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