Question 829440
{{{(tan^2(x)-cot^2(x))/(tan(x)+cot(x))=tan(x)-cot(x)}}}
{{{((tan(x)-cot(x))(tan(x)+cot(x)))/(tan(x)+cot(x))=tan(x)-cot(x)}}}
{{{tan(x)-cot(x)=tan(x)-cot(x)}}}
True.