sin(a-2π/3)-sin(a+2π/3)

опридиление что такое фотосинтез ?

какое предложение можно составить со словом "бережок"?

Передайте следующие предложения в Passive Voice.

 1. A marble pavillion protects the house. 2. The boys will paint the roof of the house. 3. Tom Sawyer whitewashed the fence. 4. Her daughters gave her three beautiful dishes as a birthday present. 5. Tom gave Nick a book for his birthday. 6. Our mother tells us stories every evening. 7. Lydia will show you a new book of pictures. 8. A boy showed her the way. 9. They will send us a box of fruit. 10. Five or six small children followed them. 11. In summer the boys often drive the horses to the fields. 12. Ivan Susanin led the Poles into the thickest part of the forest. 13. The waves carried the boat away. 14. We shall do the translation in the evening. 15. They water the flowers regularly. 16. You promised me these books long ago, 17. Bessie's father gave her a complete set of Walter Scott's works. 18. Irene's husband brought her some beautiful shells from the south. 19. The explorers gave the newspaper reporters a long interview. 20. Mr. Wilson will teach you English. 21. The doctor ordered me a month's rest from studying.