Jawabanmu

2014-08-12T22:11:44+07:00
AOC = 70 derajat
BOC = 180 - 70 = 110 derajat
BDC = sudut kelilingnya BOC = 1/2 kalinya BOC = 110 derajat : 2 = 55 derajat
jadi BDC = 55 derajat

2014-08-13T00:46:02+07:00