Respuesta :

[tex](csc(x)-1)(csc(x)+1)=csc^2(x)-1=cot^2(x)[/tex]

We know that [tex]csc^2(x)-1=cot^2(x)[/tex] because of the Pythagorean trig identity [tex]1+cot^2(x)=csc^2(x)[/tex].
NessaC

Answer:

cot x

Explanation:

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