Chứng minh ràng trong tam giác ABC sin (A + 2B)/2 = cos((C - B)/2)

Transformation: 1. Take exercise regularly and you will feel healthier. -> If you 2. Leave now, or you'll be late for class. -> If 3. You go to bed now, or your cold will get worse. -> If 4. Save electricity, or you'll pay much per month. -> If 5. Unless he phones now, he'll get no information. -> If 6. Don't try to clean this cloth, or it may lose its color. -> If 7. Water these plants properly, or they won't grow well. -> If 8. Study hard, or you'll fail in the next exam. -> If 9. Emma may miss the train. But she can get the next one. -> If 10. The children mustn't go near Nick's dog. It'll bite them. -> If 11. He should study medicine and surgery because he wants to be a doctor. -> If 12. He will not get good grades because he doesn't prepare his lesson carefully →If he 13. My uncle can't buy that house because he is poor. -> If my uncle 14. He can't speak English well because he has no chance to practice -> If he 15. Kate won't come to the party because she is sick -> If Kate 16. She doesn't have tickets, so she won't take us to the zoo. -> If she 17. My friend can't join the trip, so he won't write to me -> If my friend 18. It isn't fine now, so we won't have a picnic in the meadow -> If it 19. We don't have a bicycle, so we don't go there for a picnic -> If we 20. She is not on board now, so she can't experience these marvelous -> If she 21. We don't have enough money to go on holiday -> If we 22. You are not tall enough to reach that shelf -> If you were 23. You should work hard on the pronunciation. -> If I 24. You shouldn't tell him the truth. -> If I 25. I think you shouldn't play games too much. -> If I 26. I think you should spend less money on luxurious phones. -> If I

Write a story about yourself (80-100 words) Use the plan below and time connectors Para 1 Who, when, where... Para 2 what happened.. Para 3 what happened in the end Para 4 how you felt

Cho các kim loại sau: Mg, Al, Fe, Ag. K. a. Hãy sắp xếp các kim loại trên theo chiều tăng dần độ hoạt động hóa học của kim loại. b. Viết PTHH xảy ra khi cho lần lượt các kim loại trên vào dd FeSO4 mà sản phẩm tạo thành là kim loại c. Viết PTHH xảy ra khi cho lần lượt các kim loại trên vào nước.

3. Cho mạch điện gồm R_{1} = 40Omega nối tiếp R_{2} = 60Omega , U = 220V . Tìm nhiệt lượng tỏa ra ở điện trở R_{1} sau 30 phút.

Những văn hóa nhật bản trong chiến tranh thế giới thứ 2 ?

Tuy nhiên, theo Vĩ, tinh thần tự lập trong mỗi người rất quan trọng. Nó không chỉ giúp bạn trẻ tự chủ, bản lĩnh trong cuộc sống, mà còn là cách để bớt đi gánh nặng cho ba mẹ. Tìm 2 từ mượn và xác định nguồn gốc

III. Rewrite each of the following sentences in another way so that it means almost the same as the sentence printed below. 1) We will hold the meeting in three week's time, The meeting........ 2) He is too young to drive a car. He isn't.......