Quandaries
and Queries
dWho is asking: Parent
Level: Secondary
Question:Ω
The gradiant of a hill is 9%. What angle is created by the run/rise of
the hill and 0 degrees?
Hi Jim,
If the gradient is 9% = 9/100 then the rise over the run is 9 over 100.
If t is the angle created by the hill and 0 degrees as in the diagram then
tan(t) = 9/100 = 0.09
Hence
t = tan-1(0.09)
Penny