how do I put (csc) (sec) (cot) in my calculator?

Answer 1

cscx = 1/sinx , secx = 1/cosx , cotx = 1/tanx
e.g.
suppose you want sec 60°
sec60° = 1/cos60° = 1/.5 = 2
cot 16.7° = 1/tan16.7° = 3.33317...