Question

how do i subtract this???

81degrees24'15"
42degrees30'10"

Answer 1

start by looking at the seconds
15-10=??

then the minutes
24-30=
realize that this will be a negative number
so subtract a degree from 81
to get (24+60)-30=?

now look at the degrees
80-42=?

Answer 2

so it makes sense?

Answer 3

yes, thank you very much!!