Реферат: Билеты по математике для устного экзамена и задачи по теме

21.cos37°-cos18°

22.cosp/9-cos2p/9

23.cos212°-cos213°

24.sin310°-sin347°

25.cos5p/6-cos5p/7

26.sinp/12-sinp/18

27.cos3p/7-cos3p/11

28.cosp/11-sinp/11

29.sin2p/3-cos3p/4

30.sin16°-cos375°

31.ctg153°-ctg154°

32.tg319°-tg327°

33.tg(33p/8)-tg(37p/9)

34.ctg(101p/14)-ctg(251p/27)

35.tgp/6-ctgp/4

36.tgp/6-ctgp/6

Решить уравнения:

1. sin(x² + x) =1/2;

2. 4 - сos² x = 4sinx

3. 5 - 2cosx = 5Ö2sin(x/2)

4. cos⁴ x = cos2x

5. sin⁴ x + cos⁴ x = sin2x -1/2

6. sin² x + 3sin2x - 2сos² x = 2

7. cos(x/2) + 3/2sinx + 5sin² (x/2 ) = 3

8. sinx - 2cosx = 1

9. cos⁶ x + sin⁶ x - cos² 2x = 1/16

10.cos2x - sin³ x ×cosx + 1 = sin² x + sinx ×cos³ x

11.tgx - tg2x = sinx

12.2sin³ x - cos2x - sinx = 0

13.2cos2x = Ö6(cosx - sinx )