Răspuns:
Explicație pas cu pas:
AD⊥BC
in ΔABD dreptunghic
∡B=30° AB=16 cm BD=AB cos30°=16×√3/2=8√3 cm
BC=2BD=16√3
P=16+16+16√3=32+16√3 cm
AD=AB sin 30°=16/2=8cm
A=AD×BC/2=8×16√3/2=64√3 cm²
BE⊥AC BE=BC sin 30°=16√3/2=8√3 cm inaltimea coresp lat congruente
