A) \[7\sqrt{3}\]
B) \[\frac{7\sqrt{3}}{2}\]
C) \[\frac{7}{2}\]
D) None of these
Correct Answer: B
Solution :
Since \[C={{90}^{o}}\] Hence\[a=\frac{c\sin A}{\sin C}=\frac{7\sqrt{3}\sin {{30}^{o}}}{\sin 90{}^\circ }=\frac{7\sqrt{3}}{2}\].
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