Вычислите
1)Sin (-13pi/4)
2)Cos (13pi/6)
3)tg (-19pi/6)
4)ctg (7pi/4)
Решите уравнения
1)Sin t=-√2/2
2)Cos t=0
1)Sin (-13pi/4)
2)Cos (13pi/6)
3)tg (-19pi/6)
4)ctg (7pi/4)
Решите уравнения
1)Sin t=-√2/2
2)Cos t=0
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