Question: 12 ) If f (z ) = sin ' ( 2 7 - 1 ) , find : ( i ) The domain of f

12 ) If f (z ) = sin ' ( 2 7 - 1 ) , find : ( i ) The domain of f ( in ) R' ( 2 ) ive ) The domain of f 13 Prove the identity tan'se + cot re = It for all RER. Hint. Find - ( tan 's + cot x ) 14 Evaluate 1 2extor dre, for ato, and deduce De dre . zet + 9

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