Respuesta :

Consider this:
csc t=1/sin t


(1+ csc t) / (1+ sin t)=[1+(1/sin t)] / (1+sin t)=[(sin t+1)/sin t] / (1+sin t)=
=1/sin t= csc t.



Answer: (1+csc t) / (1+sin t)=csc t

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