user-avatar
heo.mya
2 năm trước
câu d ạ em cần biết làm sao để c/m tam giác etz đồng dạng efa và fqz đồng dạng với fea thôi ạ 50đ ( có hình sẵn) trình bày rõ ràng giúp em D/ Qua A vẽ tia Ax song song với QN và cắt EF tại Z. Chứng minh : S tam giác TQZ / S tam giác AEF= 1-cos^2 A - cos^2E - cos^2 F
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

GIÚP EM VỚI Ạ E SẼ VOTE 5 SAO VÀ CTLHN CHO AI NHANH HƠN (KHÔNG CẦN GIẢI THÍCH) 1. Our body cannot make essential fatty acids or vitamins, so we must obtain them through diet. ............................................................................................................................................................. 2. Low fatty acid levels cause a higher risk of developing Alzheimer's disease and memory loss. ............................................................................................................................................................. 3. The consumption of blueberries and tomatoes can delay short-term memory loss or Alzheimer's. ............................................................................................................................................................. 4. Just a handful of pumpkin seeds a day provides you with your recommended daily amount of zinc. ............................................................................................................................................................. 5. A good intake of vitamin E prevents thinking decline, particularly in the elderly. ............................................................................................................................................................. 6. Nuts supply us with a great source of vitamin E. ......................................................................................................................................... 7. My mother usually let me participate in social activities. ............................................................................................................................................................. 8. They never let their children make important decisions alone. ............................................................................................................................................................. 9. The police let him leave after they had asked him some questions. ............................................................................................................................................................. 10. Their friendliness made visitors change attitudes to Vietnamese people. ............................................................................................................................................................. 11. The exam is coming so the teachers make their students study a lot. ............................................................................................................................................................. 12. I often get my brother to wash my motorbike. ............................................................................................................................................................. 13. Whenever she has free time, she gets me to pull up her grey hair. ............................................................................................................................................................. 14. Somebody has robbed the bank near our house. …………………………………………………………….………………….. 15. Somebody told me to wait outside. …………………………………………………………….………………….. 16. Somebody has driven them to the airport. …………………………………………………….………………………….. 17. They will complete the new high way from north to south next year. …………………………………………………….………………………….. 18. My aunt made this sweater for her son. …………………………………………………….………………………….. 19. The television station has broadcast all the 22nd Sea-Games competitions. …………………………………………………….………………………….. 20. My teacher asked me to be here at 10 am. …………………………………………………….………………………….. 22. Thomas Edison invented the electric light bulb. …………………………………………………….………………………….. 23. She makes coffee for her parents every day. …………………………………………………….…………………………..

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