15685

15685(Cristina Vijdeliuc si Mihai Vijdeliuc, Baia Mare)

Se considera triunghiul dreptunghic ABC, cu Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \angleA\ = 90}
 si Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \anlgleB\ = 30}
. Punctul D apartine laturii BC astfel incat $AD\perp BC$