JEE Math Practice Question
The value of $${\tan ^{ - 1}}\left( {{{\cos \left( {{{15\pi } \over 4}} \right) - 1} \over {\sin \left( {{\pi \over 4}} \right)}}} \right)$$ is equal to :
- A.$$ - {\pi \over 4}$$
- B.$$ - {\pi \over 8}$$
- C.$$ - {{5\pi } \over {12}}$$
- D.$$ - {{4\pi } \over 9}$$
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