Mathematics, 10.09.2021 03:00 itaheart101

Cho tam giác ABC vuông tại A có AH là đường cao. Chứng minh rằng :a)AB^2=HC. BC
b) AH^2=HB. AC
C)1/AH^2=1/AB^2+1/AC^2

Answers: 3

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Cho tam giác ABC vuông tại A có AH là đường cao. Chứng minh rằng :a)AB^2=HC. BC
b) AH^2=HB....

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