Tập xác định của hàm số y=cot(2x+30°) là

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Giúp em 1.Stress/is/us/all/time.->............................................................................................ 2.It/come/mental/emotional activities/as well/physical activities. ->............................................................................................ 3.It/unique/personal/each/us->............................................................................................ 4.It/so personal/that/what/may/relaxing/one person/may/stressful/another. ->............................................................................................ 5. For example/you/busy/executive/who/like/keep/occupied/all/time ->........................................................................................... 6.''Taking it easy''/beach/beautiful day/you/feel/extremely/frustrating/nonproductive/uspetting ->........................................................................................................ 7.You/may/emotionally/distressed/''doing nothing''. ->........................................................................................................ 8.Too/much/emotial stress/cause/physical illness/such/high blood pressure/even/heart disease. ->........................................................................................................ 9.Phusical stress/work/or/exercise/no/likely/such/ailment. ->........................................................................................................ 10.truth/that/physical exercise/help/you/relax/better/handle/mental/emotinal stress. ->........................................................................................................