Question

in triunghiul dreptunghic ABC, m(A)=90,AD pe BC, D apartine (BC): AB=15cm si BD=9cm se cer:BC AD AB AC

Answer 1

AB^2 =BD*BC
15^2 =9*BC
BC =225/9 =25 cm
DC =BC-BD =25-9 =16 cm
AC^2 =DC*BC
AC^2 =15*25 =400
AC =20 cm