A) \[|b|=2|a|\]
B) \[|a|=2|b|\]
C) \[|a|=\sqrt{3}|b|\]
D) None of these
Correct Answer: C
Solution :
We have, \[a.b=0\Rightarrow a\bot b\] So, vectors a, b and \[a+b\]form a right angled triangle. In \[\Delta PQR,\]we have \[\tan {{30}^{o}}=\frac{|b|}{|a|}\] \[\Rightarrow \] \[|a|=\sqrt{3}|b|\]You need to login to perform this action.
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