Question

Hello friends please answer my questions A.S.A.P ...
These all questions are of prove that :-
1. cosA X tanA X cosecA = 1
2. sinA X cotA X secA = 1
3. cotA X secA X cosec^2A = cosec^3A
4. secA X cotA X cosecA = cosec^2A
5. (1-sin^2A ) + 1/cosec^2A = 1
Please solve it. If you just solve 1-3 questions from here, that will be too helpful for me.

Answer 1

Answer:

(1+cotA+tanA)(sinA-cosA)=secA/cosec2A-cosecA/sec2A.