Jawabanmu

2014-03-31T21:02:49+07:00
Lim 2x cotx = lim 2x . 1/tanx
                 = lim 2x / tanx
                 = 2x/x
                 = 2
kak berarti cot x = 1/tanx ??
iyaaa, cotan x = 1/tanx
2014-03-31T21:08:49+07:00