A) \[\frac{1}{{{\cos }^{-1}}\left( \sin {{\theta }_{C}} \right)}\]
B) \[\frac{1}{{{\tan }^{-1}}\left( \sin {{\theta }_{C}} \right)}\]
C) \[{{\cos }^{-1}}\left( \sin {{\theta }_{C}} \right)\]
D) \[{{\tan }^{-1}}\left( \sin {{\theta }_{C}} \right)\]
Correct Answer: D
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