Question

Умоляю помогите люди !!!

Answer 1

Ответ:

1. a) 120=2π/3

b) 300 = 5π/3

2. a) 11π/9 = 220

b) 7π/4 = 315

3. ctg(359) = ctg(179+180) = ctg179

cos410=cos50+360=cos50

tg175=tg90+85=tg85

4. ctg359 +; cos410 -; tg175 -;

5. a +; b -

6. 5×1/2-1-1=5/2-2=1/2=0,5