A) \[-1/3\]
B) 0
C) \[1/3\]
D) \[4/9\]
Correct Answer: B
Solution :
\[\cos \left\{ {{\cos }^{-1}}\left( \frac{-1}{7} \right)+{{\sin }^{-1}}\left( \frac{-1}{7} \right) \right\}=\cos \frac{\pi }{2}=0\].You need to login to perform this action.
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