Math miscellaneousHard
Question
If 
be such that 
If the projection 
along 
is equal to that of 
along and 
are perpendicular to each other then 
equals
be such that If the projection along is equal to that of along and are perpendicular to each other then equalsOptions
A.2
B.√7
C.√14
D.14
Solution
Projection of along and along is 
and 
respectively
According to question
⇒ 
along and along is and respectivelyAccording to question
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