Cho tam giác ABC vuông có Â= 90 độ, b= 5cm, góc B= 40 độ. Giải tam giác ABC?

Cho tam giác ABC vuông tại A có đường cao AH= 4cm, c=5cm. Giải tam giác ABC?

C​ho tam giác ABC vuông tại A, đương cao AH

​a) Biết AB= 3cm; AC= 4cm. Tính BH; AH

​b) Biết HB= 2cm; HC= 8cm. Tính AH, AB, AC

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C​ho tam giác ABC vuông tại A có AH là đường cao và AH= 4,8cm, BC= 10cm. Giải tam giác ABC

Đóng vai người lính trong bài thơ Ánh Trăng kể lại tâm trạng của mình

C​ho tam giác ABC có AB=40cm, AC=58cm, BC=42cm

​a) Chứng minh tam giác ABC vuông tại B. Tính đường cao BH (làm tròn đến hàng đơn vị)

​b) Vẽ HE vuông góc với AB tại E và HI vuông góc với BC tại I. Chứng minh HB^3 =AC.AE.IC

V​iết lại các câu sau sử dụng Adverb clauses of result

​1 She did not go the zoo yesterday beacause she was ill.

​-

​2 We cannot go to Vung Tau on this Sunday because it may rain.

​-

​3 Hoa misses her parents a lot because they live far away from each other

​-

​4 He never gets high marks on Literature because he is lazy

​-

​5 I may not come to play with you tomorrow because I'm still sick

​-

​6 Uyen can't attend the trip because of her sickness

​-

​7 Last night she did not learn her previous lessons, so she got bad marks

​-

​8 Because the weather is cold, we can't go swimming

​-

​9 It is raining, so we may not go out this evening

​-

​10 Because the Parkers are nice, Van feels like a member of their family

​-

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1​ We sometimes visit the museum. It opens on public holidays

​-The museum..................opens on public holidays

​2 I want to send my son to a university in the UK, she said

​- She said that....................her son to a university in the UK

​3 Teachers should educate students to preserve traditional values

​-Students...........................preserve traditional values by teachers

​4 She doesn't know how to get access to the Internet

​-She......................how to get access to the Internet

​5 He read the poem to us yesterday. The poem has been translated into several languages

​-The poem.......................us yesterday has been translated into several languages

​6 I don't have a chance to speak to foreigners

​-I wish......................to speak to foreigners

​7 Minh said, I am learning English in an evening class

​- Minh said that......................English in an evening class

​8 They will grow flowers in the front garden

​-Flowers........................in the front garden

​9 The man called the police. His wallet was stolen

​-The man..........................called the police

​10 This cinema attracts lots of youngsters

​-Lots of youngsters........................this cinema

1 I do not ​have time to visit my old friends frequently

​- I wish................to visit my old friends frequently

​2 Lan said I take a cooking class every summer

​-Lan said that...................a cooking class every summer

​3 laura painted a picture. It's being shown in an exhibition

​-The picture ......................being shown in an exhibition

​5 I am not good at learning English, so i do't have a chance to the USA

​-If I...........................English, i would have a chance to the USA