JEE Math Practice Question
$${\sin ^1}\left( {\sin {{2\pi } \over 3}} \right) + {\cos ^{ - 1}}\left( {\cos {{7\pi } \over 6}} \right) + {\tan ^{ - 1}}\left( {\tan {{3\pi } \over 4}} \right)$$ is equal to :
- A.$${{11\pi } \over {12}}$$
- B.$${{17\pi } \over {12}}$$
- C.$${{31\pi } \over {12}}$$
- D.$$-$$$${{3\pi } \over {4}}$$
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