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Old 07-23-2012, 03:54 AM
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Default percent to degrees

As I hiker I sometimes want to calculate the difficulty of a climb. I know how to use rise over run to get the percent of an incline. How do I convert that percent to degrees WITHOUT a scientific calculator? For example, yesterday I went up a trail with a 38 percent incline (1000 ft. gain over 1/2 mile).
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Old 07-23-2012, 04:12 AM
JohnS JohnS is offline
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Default Re: percent to degrees

Quote:
Originally Posted by Unregistered View Post
As I hiker I sometimes want to calculate the difficulty of a climb. I know how to use rise over run to get the percent of an incline. How do I convert that percent to degrees WITHOUT a scientific calculator? For example, yesterday I went up a trail with a 38 percent incline (1000 ft. gain over 1/2 mile).
You either need a scientific calculator (Windows has one hiding in the Windows apps, and there are many Javascript ones on the web) or a trig table. You need the arc whose tangent is 0.38. The inverse function is called arctangent, abbreviated ATAN, ATN or TAN with -1 superscript.
The answer is 20.8
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Old 07-31-2012, 04:35 PM
luijibowen luijibowen is offline
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Default Re: percent to degrees

It depends if you're a brilliant person which can easily give the answer directly
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