A) sin?1(1/2)
B) \[{{\sin }^{-1}}\left( \frac{\sqrt{8}}{9} \right)\]
C) \[{{\sin }^{-1}}(8/9)\]
D) \[{{\sin }^{-1}}(5/7)\]
Correct Answer: C
Solution :
\[C={{\sin }^{-1}}\left( \frac{1}{_{w}{{\mu }_{g}}} \right)={{\sin }^{-1}}\left( \frac{{{\mu }_{w}}}{{{\mu }_{g}}} \right)={{\sin }^{-1}}\left( \frac{8}{9} \right)\]
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