Question

csc^4 x-cot^4 x= (1+cos^2 x)/1-cos^2 x

Answer 1

I need to verify this identity

Answer 2

\[\csc^4 x-\cot^4 x= \frac{(1+\cos^2 x)}{1-\cos^2 x}\]
@Jeffrospin, this?

Answer 3

Yes! Just without the parentheses (my typo).