Math miscellaneousMedium

Question

If  ,  are such that    =  1,  ||  and  =  √2,    =  √3,  =  ,  then the angle between    &    is

Options

A.
B.
C.
D.

Solution

 
1  = 
λ  = 
2  =  λ2 
(a2b2  sin2θ)  =    ×  2  ×3  sin2θ
sin2θ  =    ∴  θ  = 

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