Regular descent vs steep descent
 

Hi,

a) What are the advantages and the disadvantages of these 2 descents?

b) Is the angle of regular descent 3 degree (same as in approach)?

c) What’s the angle of steep descent? Is there a limit for this angle?

d) Is it possible to use steep descent in normal flight (no emergency descent)?

e) Is it possible to use steep approach in normal landing?

Feedback appreciated
Regards