A) \[\text{6}{{\text{0}}^{\text{o}}}\]
B) \[{{\tan }^{-1}}\left( \frac{1}{2} \right)\]
C) \[{{\tan }^{-1}}\left( \frac{\sqrt{3}}{2} \right)\]
D) \[\text{4}{{\text{5}}^{\text{o}}}\]
Correct Answer: B
Solution :
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