JEE Math Practice Question
cosec$$\left[ {2{{\cot }^{ - 1}}(5) + {{\cos }^{ - 1}}\left( {{4 \over 5}} \right)} \right]$$ is equal to :
- A.$${{75} \over {56}}$$
- B.$${{65} \over {56}}$$
- C.$${{56} \over {33}}$$
- D.$${{65} \over {33}}$$
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