VectorHard
Question
Let 
and 
be three vectors. A vector 
in the plane of 
and 
, whose projection on 
is 1/√3 , is given by
and be three vectors. A vector in the plane of and , whose projection on is 1/√3 , is given byOptions
A.
B.
C.
D.
Solution
projection of
on 
⇒ λ + μ - λ + μ - λ - μ = 1 ⇒ μ - λ = 1 ⇒ λ = μ - 1
At μ = 2,
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