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Plz answer it as soon as possible I just didnt get the point how to take the vectors

Plz answer it as soon as possible I just didnt get the point how to take the vectors
 

Question Image
Grade:12

1 Answers

Arun
25763 Points
2 years ago
Dear Nikhil
 
a vector in plane of b and c = tb + sc = (t + s) i + (2t + s) j + ( – t – 2s) k
 
now its projection on a = 2 t + 2s – 2t – s – t – 2s / sqrt (6)  = sqrt (2/3)
 
now solve for t and s.
then you can check options
 
 
 

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