The value of $cot\left( {\cos e{c^{ - 1}}{5 \over 3} + {{\tan }^{ - 1}}{2 \over 3}} \right)$ is :

Question

${{6 \over 17}}$

${{3 \over 17}}$

${{4 \over 17}}$

${{5 \over 17}}$

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