(HP-65) Percent Functions

[Dave Britten]

(01-12-2020 02:52 PM)SlideRule Wrote:  

(01-12-2020 03:59 AM)Paul Dale Wrote:  I've never used %D.MS. What disciplines use it and what for?

Surveying? try Convert Slope Percent (%, Slope (grade) Units) to Degrees, Minutes, Seconds (d°m′s″, Common Units)

Example: 7% slope (steep roadway incline) ≈ 4º 0' 15.02"

BEST!
SlideRule

Looks like that's a slightly different calculation: arctan(x/100) where x is the slope percent. I haven't looked through the Survey Pac much, but I'll bet there's a card in there for converting between grades and degrees.

EDIT: Nope, looks like they didn't bother including it as a separate card, because it's such a simple calculation.