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In triunghiul ABC drepthunghic, m(A)=90 se duce AD perpendicular BC,D apartine(BC)
A)Daca AB=8cm,Ac=6cm,AD=4,8cm calculati aria ABC,BC
B)daca ab=20cm,bc=25cm,ad=12cm,--||-- AC
C)Daca Ad=28,8 cm,AB=36dm,A abc=865^2,calculati AC BC
D)Daca AB=2,4m,BC=30dm,AC=18dm Calculati AD