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Ответ

Ответ дан
Romanovatatian

Ответ:1) -0,5    2) 0,3640     3) не существует

Объяснение:

1) sin2730°= sin(360° * 7 + 210°)=sin210°=sin(180°+30°)= - sin30°= - 0,5.

2) ctg610°=ctg(180° * 3 + 70°)=ctg 70°=0,3640.

3) tg 7π/2= tg 3,5π = tg(3π+0,5π)= tg π/2 - не существует.

Ответ

Ответ дан
takushnir

1) sin2730°= sin(360°*7 +180°+30°)=-sin30°=-0.5

2) ctg610°=ctg(360°+180°+70°)=ctg(180°+70°)= ctg70°≈0,364

3) tg7π/2= tg(2π -π/2)= -tgπ/2 - не существует.


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