A) \[\sqrt{2}\]
B) 2
C) 3/2
D) 4/3
Correct Answer: A
Solution :
\[\mu =\frac{\sin \,\left( \frac{A+{{\delta }_{m}}}{2} \right)}{\sin (A/2)}=\frac{\sin {{45}^{o}}}{\sin {{30}^{o}}}=\sqrt{2}\]
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