Jawabanmu

2014-04-14T20:30:53+07:00
4 sin 210 - 3 tan 135
4 (-1/2) - 3 (-1/2 akar2)
-2 + 2,121 = 0,121

2014-04-14T20:40:48+07:00
Sin 210 = -sin 30 = -1/2
tan 135 = -tan 45 = -1

4 sin 210 - 3 tan 135
4(-1/2)-3(-1) = -2+3 = 1

maaf kalau salah
semoga membantu:)