Question 1101399
{{{(csc(x)-cot(x))(csc(x)+cot(x))=1}}}

{{{csc^2(x)-cot^2(x)}}}


{{{(1/sin(x))^2-(cos(x)/sin(x))^2}}}


{{{(1-cos^2(x))/sin^2(x)}}}


{{{sin^2(x)/sin^2(x)}}}

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