A) \[\pi =2{{\sin }^{-1}}\left( \frac{5}{2\sqrt{13}} \right)\]
B) \[\pi ={{\sin }^{-1}}\left( \frac{5}{2\sqrt{13}} \right)\]
C) \[{{\cos }^{-1}}\left( \frac{5}{2\sqrt{13}} \right)\]
D) \[{{\cos }^{-1}}\left( \frac{5}{\sqrt{13}} \right)\]
Correct Answer: A
Solution :
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