there are 2 questions.

Provethe following identities:

1.

cosec^4 Ѳ – cot^4 Ѳ = cosec^2 Ѳ + cot^2 Ѳ

2.

2 tan A = [(cos A)/(cosec A – 1)] + [(cos A)/(cosec A +1)]

for question 1, i start from the LHS, but get "stuck".

for question 2, i start from the RHS, but also get "stuck".