Question

fie triunghiul dreptunghic ABC cu m(A) =90°,m(B)=60°. stiind ca mediana [ AD] are lungimea de6 cm,aflati AB si BC

Answer 1

mas∡C = 30° ⇒ [AB] = [BC]/2 = [AD] = 6cm
⇒ BC = 12cm    AB = 6cm
AC² = BC² - AB² = 144 - 36 = 108
AC = 6√3 cm