A) \[60{}^\circ \]
B) \[45{}^\circ \]
C) \[30{}^\circ \]
D) \[15{}^\circ \]
Correct Answer: C
Solution :
\[{{\lambda }_{x}}=3500\,\,\overset{\text{o}}{\mathop{\text{A}}}\,,\,\,{{\lambda }_{y}}=7000\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\] \[\sin C=\frac{{{\mu }_{2}}}{{{\mu }_{1}}}=\frac{{{\lambda }_{x}}}{{{\lambda }_{y}}}\] \[=\frac{3500}{7000}=\frac{1}{2}\]. \[\sin C=\sin {{30}^{o}}\] \[\therefore \] \[C={{30}^{o}}\]
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