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2 năm trước
Bài 1:Cho tam giác ABC vuông tại A, đường cao AH, phân giác AD. Tính HB, HC biết CD= 68cm, BD= 51cm Bài 2: Cho tam giác ABC có AB= 12cm, AC= 16cm, BC= 20cm a) Chứng minh tam giác ABC vuông b) Giải tam giác vuông ABC c) Tính đường cao AH d) Kẻ HD và HE lần lượt vuông góc với AB và AC. Tính HD và HE Giúp mik vs
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