Зачет по тригонометрии

Вариант 1

1 + tg² x =

tg x =

cos²x – sin²x =

sin (x – y) =

cos x – cos y =

sin ( ) =

tg 2x =

cos x cos y + sin x sin y =

-2 sin sin=

cos x cos y =

sin² x =

tg ( 2π – x) =

1 –2 sin ²x =

cos ( )

sin (x +y) =

Вариант 2

1.

2. 1 =

3.sin 2x =

4.cos (x + y) =

5.tg ( x – y) =

6.cos ( 2π +x)

7.sinx – siny =

8.

9. 2sincos=

10.sin x cos y =

11. cos²=

12.ctg (- x ) =

13. sin x cos y – cos x sin y =

14. sin ( )

15. cos x + cos y =

Вариант 3

1 + ctg² x =

tg x ctg x =

2 sin x cos x =

cos² x =

tg ( x – y) =

2sin cos =

=

cos (x - y) =

ctg ( )

sin x cos y =

cos (π –x) =

=

sin^{2 =}

sin ( ) =

sin x + sin y =

Вариант 4

1.=

2.sin²x + cos²x =

3.tg ( x + y) =

4. 2cos cos=

5.sin 2x =

6.sin ( x + y) =

7. sin ( ) =

8. sin x – sin y =

9. tg ( π + x) =

10. cos²=

11. 2cos² x – 1 =

12. cos ( ) =

13. cos x cos y - sin x sin y =

14. cos x sin y =

15. cos 2x =