A) \[20{}^\circ \]
B) \[60{}^\circ \]
C) \[45{}^\circ \]
D) \[30{}^\circ \]
Correct Answer: D
Solution :
\[\mu =\frac{1}{\sin C}\Rightarrow C={{\sin }^{-1}}\left( \frac{1}{2} \right)={{30}^{o}}\]
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