Did I solve the task correctly?
Hello,
I calculated the following task:
My solution is : e =9.91 cm & Alpha = 81 °
Is that right?
LG
(1 votes)
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Hallo,
der Winkel stimmt, die Diagonale nicht.
Das Stück vom Schnittpunkt bis zur Spitze ist nach dem Pythagoras die Wurzel aus (4²-2.6²).
Wenn f die Diagonale e im Verhältnis 2:5 teilt, entspricht das obere Stück von e 2/7 der Gesamtlänge. Du teilst das kurze Stück daher durch 2 und nimmst es mal 7; so bekommst Du e.
Herzliche Grüße,
Willy
Warum 2/7 ? Muss es nicht 2/5 sein, also beträgt die Seite e =7,6 cm ?
Nein. 2:5 bedeutet, der kürzere Teil hat 2/7 der Gesamtlänge, der längere 5/7.
Das ist nicht zu verwechseln mit dem Bruch 2/5,
Vielen Dank für den Stern.
Willy
Nein. Etwas zwischen 10 und 11.
Kommt dann für e =21,28 raus?
alpha = 99°
e = 10.6
wie hast du denn gerechnet