[TowerTalk] Elementary question - trig formula

[WE9V Chad Kurszewski]

>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.  


It's just a simple ratio.

 B        ?
---   =  ---
C+D       C


So, ? = C * B/(C+D)
---
Chad Kurszewski, WE9V                       e-mail:  WE9V@qth.com
The Official "Sultans of Shwing" Web Site:  http://www.QTH.com/sos

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