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## [TowerTalk] Elementary question - trig formula

 To: [TowerTalk] Elementary question - trig formula n4zr@contesting.com (Pete Smith) Thu, 25 Jun 1998 15:12:36 -0400
 ```At the risk of getting into the dumb question territory: If you know how far from the base of your tower your guys attach (on flat ground), and you know how high they attach to the tower, then you should be able readily to calculate how much turning radius inside the guys would exist at any given height on the tower. Obviously, this would be useful for assessing a potential stack design. I /I / I / I C / I /----I / ? I / I D / I -----/----B---I--------- That is, if you know the lengths of B and C+D, then you ought to be able to figure out what "?" is for any length of C. Unfortunately, I've forgotten virtually all the plane geometry and trig formulas I ever learned, and I didn't keep any high school math books. I think the two triangles involved are called "similar triangles," but that's as far as my memory goes. Can anyone tell me offhand what the right formula is for this? Once I have the fomula I can do the calculations, but what to calculate? Thanks! 73, Pete Smith N4ZR In wild, wonderful, fairly rare WEST Virginia -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@contesting.com Problems: owner-towertalk@contesting.com Search: http://www.contesting.com/km9p/search.htm ```
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