Now can not get base of the building now
what do you do. AKA Obtuse Triangle calculation?
There more than one way first use drawing board or CAD.
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This how take two readings ant know distance apart see drawing
Very close no math
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EXCEL worksheet no drawing.
Just plug in numbers out pops the answer.
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Now stand in your front yard and know how tall your neighbors tree is and not clim up tree and drop a tap.
See below fof EXCEL work sheet
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Dave?
davesmith1800