Question

prove that
$\sin( \cot ^{ - 1}(2x \div 1 - x { }^{2} ) + \cot ^{ - 1}(1 - x {}^{2} \div 1 + x {}^{2} )) = 1\ \textless \ br /\ \textgreater \ \ \textless \ br /\ \textgreater \ \ \textless \ br /\ \textgreater \ \ \textless \ br /\ \textgreater \ ​$
​

Answer 1

Step-by-step explanation:

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Answer 2

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