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Bùi Huy
6 tháng trước

Viets giúp mình 3 hệ thức hương trong tam giác vuông giúp mình đy cacban

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2 câu trả lời

NHQ2k7
6 tháng trước

Đáp án+các bước giải thích

Xét `ΔABC` vuông tại `A` có `AH⊥BC`

 `=>{(AB^2=BH.BC),(AC^2=CH.BC),(AH^2=BH.CH),(AB.AC=AH.BC):}`

NgocPhuongTHCSND
6 tháng trước

Đáp án:

(1) `b^2=ab' , c^2=ac'` 

(2) `h^2=b'c'`

(3) `bc=ah`

(4) `1/(h^2)=1/(b^2)+1/(c^2)`

(5) `b^2+c^2=a^2` 

Giải thích các bước giải:

Hệ thức về cạnh và đường cao trong tam giác vuông:

(1) `b^2=ab' , c^2=ac'` 

(2) `h^2=b'c'`

(3) `bc=ah`

(4) `1/(h^2)=1/(b^2)+1/(c^2)`

(5) `b^2+c^2=a^2`

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