Đáp án: cho tam giác ABC có đường cao AH biết AB là 9 AC là 12cm Tính AH - Đáp án Giải thích các bước giải

[(l) Ap dung he thuc luong trong tam giac vuong ta duoc (1/(A(H^2))) = (1/(A(B^2))) + (1/(A(C^2))) = (1/((9^2))) + (1/(((12)^2))) = ((25)/(1296)) ⇒ A(H^2) = ((1296)/(25)) ⇒ AH = ((36)/5) = 7,2 cm ]

Minh Nguyen

2 năm trước

cho tam giác ABC có đường cao AH biết AB là 9 AC là 12cm .Tính AH

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HuuKhanh

2 năm trước

Đáp án:

Giải thích các bước giải:

thutrangdoan289

2 năm trước

\[\begin{array}{l} Ap\,\,dung\,\,he\,\,thuc\,\,luong\,\,\,trong\,\,tam\,\,giac\,\,vuong\,\,ta\,\,duoc:\\ \frac{1}{{A{H^2}}} = \frac{1}{{A{B^2}}} + \frac{1}{{A{C^2}}} = \frac{1}{{{9^2}}} + \frac{1}{{{{12}^2}}} = \frac{{25}}{{1296}}\\ \Rightarrow A{H^2} = \frac{{1296}}{{25}}\\ \Rightarrow AH = \frac{{36}}{5} = 7,2\,\,cm. \end{array}\]

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cho tam giác ABC có đường cao AH biết AB là 9 AC là 12cm .Tính AH

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Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

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cho tam giác ABC có đường cao AH biết AB là 9 AC là 12cm .Tính AH

2 câu trả lời

Nước ta có bao nhiêu dân tộc?

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Choose the best answer.I think you should buy _____ pack of mineral water instead. And you can also buy _____ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______ cookies and soft candies.

Choose the best answer.We should decorate our living room with _____ orange banner. We also need ________ ribbons, balloons, party hats and costume.

Choose the best answer.I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

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We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.