Re: Gradient measurements

[G.Lambert@unsw.edu.au (Geoff Lambert)]

"David Martin" <d_martin@mountains.net.au> wrote:

>What is the conversion formula for our 1 in x form of gradient measurements
>to the percentage system?

See others' earlier posts

>Also, conversion to degrees?

Degrees = arctangent(gradient in fraction)

or

Degrees =arctangent (gradient in %/100)

Thus 

arctan(50%/100) = arctan(0.5) = 26.6 degrees

and

arctan(100%/100) = arctan (1.)  = 45 degrees (this is the one you
refer to)

Geoff Lambert