Question

truunghiul ABC ,m(A)=90° AD | BC ,D€(BC),AD =12 CM , AB =15 CM . CALCULATI AC,BC ,BD ,DC .
distanta de la (D,AC) SI DM UNDE M mij [AB]
URGENT VA ROGG CU DESEN ​

Answer 1

Pitagora

BD = √AB² - AD² = √225 - 144 = √81 = 9 cm

Teorema inaltimii

AD² = BD·DC => DC = AD²/BD = 144/9 = 16 cm

BC = BD + DC = 9 + 16 = 25 cm

Pitagora

AC = √BC² - AB² = √625 - 225 = √400 = 20 cm