https://rechneronline.de/pi/equilateral-triangle.php
See if this helps.
73
On Mar 19, 2017 7:59 PM, "Jim Rhodes" <jimk0xu@gmail.com> wrote:
> Wh as t you really want to know is the height of the right triangle that is
> half of your equilateral triangle. So square the length of one side, then
> square half of one side. Subtract the smaller result from the larger, then
> take the square root of v the diffrrence. That is the height.
>
> Jim Rhodes
> K0XU
>
> On Mar 19, 2017 19:48, "Jamie WW3S" <ww3s@zoominternet.net> wrote:
>
> > need to plot a rx array.....height of equilateral triangle with each side
> > 40 ft? 50 ft?
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