Hey! Thanks for checking my math, cause it was indeed incorrect! And I'll go fix the page. But just for the record a 3 / 4 / 5 triangle has angles of 37 / 53 / 90 so isn't exactly correct either. ;) <br>(thanks google, cause my trig is well gone) <br>
<br>A 30 / 60 / 90 triangle has sides of (square root of 3) / 1 / 2, so the correct measurement is for every 10 yards of range you need to go 5.8 yards to the side, for simplicity I'll be rounding that to 6 yards. <br>
<br>And this is why you put things out for peer review, thanks again!<br>Jonathas<br><br><br><br><div class="gmail_quote">On Fri, Mar 26, 2010 at 9:34 AM, Garth G. Groff <span dir="ltr"><<a href="mailto:ggg9y@virginia.edu">ggg9y@virginia.edu</a>></span> wrote:<br>
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M'Lord Jonathas,<br>
<br>
Thank you for taking the trouble to chart the range under the new
rules. I looked carefully at your drawing for the side distances and
respectfully disagree with your measurements, though I will admit it
has been over 40 years since I took geometry. <br>
<br>
As I see it, the additional width of the safety zone at the target for
the 40 yard distance should be 30 yards, not 20. The safety zones to
the sides of the range up to the target line must be 30/60/90 degree
triangles (since one angle is 90 degrees by default, and one is given
at 30 degrees, leaving 60 for the remaining angle). The proportion of
the sides of such a triangle are always 3/4/5. Thus when the shooting
line is at 40 yards from the target the shortest side (the extension of
the target line) will be 30 yards, leaving the diagonal from the edge
of the shooting line to the outer end of the extension at 50 yards.
This makes the width of the safety zone at the target line 30+10 (or
whatever)+30 yards, or for most of us 70 yards wide. On most ranges
this can be the defacto safety zone for 20 and 30 yards as well, since
the triangles for those shorter distances would be contained within the
larger space used for 40 yards (this would be a must if the edges of
the safety zone were marked with tapes, white lines, or a barrier of
some sort, since you would not want to move the boundaries with each
change of distance).<br>
<br>
Of course, all this fuss would have been avoided if our fearless
leaders had provided us marshals with an official diagram, instead of
making us dredge the depths of our dreadful, pimpled high school days.<br>
<br>
Kind regards,<div class="im"><br>
<br>
<br>
Mungo Napier, Shire of Isenfir Archery Marshal<br>
<br>
<br>
<br></div>
Jonathas wrote:
<blockquote type="cite"><div><div></div><div class="h5">Given the discussion and request for clarification 2 weeks
ago, I've worked up a first attempt to put down in writing the results
of that discussion.<br>
<br>
If you have a moment please take a look at the page and reply to the
list with your comments on what is not clear and suggestions on how to
make it more so.<br>
<br>
<a href="http://archery.atlantia.sca.org/rangerules.html" target="_blank">http://archery.atlantia.sca.org/rangerules.html</a><br>
<br>
In Service,<br>
Jonathas<br>
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