Leaning_ladder_setup.svg


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Description
Deutsch: Der Anstellwinkel bei der gezeichneten Lage 1 : 3 ergibt sich rechnerisch
~ 0,31

mit ca. 71,565°, was innerhalb des erforderlichen Bereichs von 65° bis 75° liegt.

Der mit «15°» bezeichnete Winkel entspricht also eigentlich ca. 18°.
English: Safe setup of a leaning ladder: “The safest angle for a ladder is 75.5°”.
Date
Source La-main.gif (pretends relation of 1:4 with same picture)
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17 February 2017