VectorHard
Question
Let 
and 
be three non-zero vectorssuch that 
is a unit vector perpendicular to both the vectors 
and 
If the angle between 
and 
is 
, then 
is equal to
and be three non-zero vectorssuch that is a unit vector perpendicular to both the vectors and If the angle between and is , then is equal toOptions
A.0
B.1
C.
(a12 + a22 + a32)(b12 + b22 + b32)
(a12 + a22 + a32)(b12 + b22 + b32)D.
(a12 + a22 + a32)(b12 + b22 + b32)(c12 + c22 + c32)
(a12 + a22 + a32)(b12 + b22 + b32)(c12 + c22 + c32)Solution
Since, 
∵
is perpendicular to both 
and 
and 
is also a unit vector perpendicular to both and ....
∵
∵
is perpendicular to both and and is also a unit vector perpendicular to both and ....∵
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