Laturile triunghiului ABC au lungimile AB=13 cm , BC=14 cm , AC =15cm.Fie AD inaltimea din A si notam AD=h , BD=X.
a)Demonstrati ca 169-x*2=225-(14-x)*2. b)Calculati x si h.
Semne : * = la puterea.... . Multumesc:X
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