cosec$\left[ {2{{\cot }^{ - 1}}(5) + {{\cos }^{ - 1}}\left( {{4 \over 5}} \right)} \right]$ is equal to :

Question

${{75} \over {56}}$

${{65} \over {56}}$

${{56} \over {33}}$

${{65} \over {33}}$

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