0 дауыс
308 көрілді
√2сtg x<√2

1 жауап

0 дауыс
ttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt
√2сtg x<√2  
 сtg x <1
2pi k + 1 < x < 2pi k + pi,  n element Z
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