Răspuns:
AB? - (3v5) -45 AC? - (3v6) ² = 54 BC? = 3? = 9 we observe that AC? = AB? + BC2 that is 54 = 45 + 9 so the triangle is rectangular theorem theorem AB? = AD * AC = AD = 45 / 3v6 = 15 // 6 15 v6 / 63D2,5v6 45 = AD * 3v6 = BC? = DC * AC 9 = DC * 3v6 - DC = 9 / 3v63D3 / V6 = 3 v6 / 6 = 0 , 5v6 BD = v (2.5v6 * 0.5v6) = v7.5% = D0.5v30
