A) \[\frac{3}{7}\]
B) \[\frac{7}{3}\]
C) 3
D) 7
Correct Answer: B
Solution :
[b] Required value \[={\frac{b.a}{|b|}}/{\frac{a.b}{|a|}=\frac{|a|}{|b|}=\frac{7}{3}.}\;\]You need to login to perform this action.
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