Find the symbols for degrees, minutes and seconds on your calculator. Then find cot(43�‹41�Œ13"). Please give the details of what you did in addition to the answer. Explain what you did to find this. Has any other response used a wrong technique? What would you do to fix it?
using standard notation, you want
cot(43° 41' 13")
on my calculator, and most scientific calculators,
there is a key labeled D°M'S
and recall that cotØ = 1/tanØ
so on mine the keystrokes are as follows
1
/
tan
43
D°M'S
41
D°M'S
13
=
and I got 1.0469..
without using the D°M'S key
43° 41' 13"
= 43+41/60+13/3600
= 43.6869444..°
then take 1/tan 43.6869444.. = 1.0469..