Jawabanmu

2014-05-24T15:12:33+07:00
Beta =150, karena cos 180-150 = cos 30 =1/2 akar 3, jadi cos 150 = -1/2 akar 3, tg 150 = -1/3 akar 3
2014-05-25T00:01:42+07:00