Askiitians Expert Soumyajit IIT-Kharagpur
Last Activity: 15 Years ago
Dear Rohit Rastogi,
Ans:- CORRECT ANS IS 2
Let the vectors are a,b,c
As they are coplanar and hence [abc]=0
Solving we get an equation of β which is satisfied by real values of β , iff β²=2
Hence β=+√2 or -√2
Hence 2 values of β are possible.
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Regards,
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Soumyajit Das IIT Kharagpur