A) \[\frac{\pi }{2}\]
B) \[{{\cos }^{-1}}(0.6)\]
C) \[{{\tan }^{-1}}\left( \frac{7}{5} \right)\]
D) \[\frac{\pi }{4}\]
Correct Answer: A
Solution :
\[C=\sqrt{{{A}^{2}}+{{B}^{2}}}\] =\[\sqrt{{{3}^{2}}+{{4}^{2}}}=5\] \[\therefore \] Angle between \[\overrightarrow{A}\] and \[\overrightarrow{B}\] is \[\frac{\pi }{2}\]You need to login to perform this action.
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