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