user-avatar
quandaicahn35
2 năm trước
Giúp em 2 câu này ạ. Vẽ hình ghi GT,KL. Mai em kiểm tra rồi ạ. Hứa vote 5*,cảm ơn và ctrlhn Câu 2: Cho xôy là góc nhọn. Điểm H nằm trên tia p/g của xôy. Từ H kẻ các đường vuông góc xuống Ox, Oy( A€Ox, B€Oy) a,CMR: tam giác HAB cân b, Gọi D là hình chiếu của A trên Oy, C là giao điểm của AD và OH. CMR: BC vuông góc vs Ox c, Khi xốt= 60 độ, OH= 4cm. Tính OA
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

1.She sympathizes __________ them because she knows how it’s like to be poor. 2.Her enthusiasm makes up __________ her lack of experience. 3.My mother brought me __________ to be a sympathetic and caring person. 4.We came up __________ many difficulties during the project. 5.She was a bit shy at first but we got __________ very well. 6.I have to cook, wash clothes and clean __________ the house on my own. 7.Last week, I came __________ an old photo album as I was cleaning up the basement. 8.I found __________ that the doctor was my father’s friend back in college. 9.To avoid obesity, she had to cut down __________ sweets and fat. 10.We were childhood friends, but his family moved away and we drifted __________. 11.We had to check __________ the package before sending it. 12.She hired a nanny to look __________ her children. 13.My dad promised me that he would give __________ smoking. 14.She dropped __________ of school at the age of 15. 15.We didn’t know exactly how to deal __________ the new problem. 16.I couldn’t put __________ with her messy habits anymore. 17.She was the one who came __________ with the idea of recycling carton boxes. 18.You'll have to run faster than that if you want to catch __________ with Marty. 19.My nephew came __________ with chicken pox this weekend. 20.My father took __________ eggshell carving after his trip to the US.

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team