Question

I need help proving a few trigonometric identities.
$tanA = tanA * cscA^{2} + cot(-A)$

$csc^{2} \beta -csc^{2} \beta *sec^{2} \beta = -sec^{2} \beta$

$cscx+cotx=\frac{sinx}{1-cosx}$

$(secx+tanx)^{2} = \frac{cscx+1}{cscx-1}$

Answer 1

Answer:

i have solved them . if u can't understand. .. ask me XD