Question

Сап. Выручайте, знания :)

Answer 1

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Answer 2

;)

Answer 3

1)-4sina-2sina+sina=-5sina=-5*(-0.1)=0.5
2)-10ctg(-pi/9)/ctg(pi/9)=-10
3)tga-4tga-3tga=-6tga=-6*0.65=-3.9

Answer 4

Спасибо :))