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danghongmai811
2 năm trước
Cho ΔABC vuông tại A , AH ⊥BC a) biết AC = 6cm,BC=10cm Tính AB, AH .HB , HC b)Cho BH = 3cm , HC = 4cm tính AB, AC , BC , AH c)biết AH = 6cm , BH = 4,5 cm Tính AB , AC , BC , AH d)cho AB = 6cm Tính AC , BC , CH , AH e)Biết $\frac{AB}{AC}$ = $\frac{5}{7}$ ; AH = 15cm Tính AB , AC , BC , HC
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