Jawabanmu

2014-04-16T16:35:49+07:00
Tan 2x = -√3/3

√3/3 = 330° / 150°

jadi,
-  2x = 330
  x= 165

-   2x = 150
 x= 75
2014-04-16T16:37:04+07:00
3tan2X=120 maka tan 2x=40»tan x=20+k.180 jawabanx (20,200)