Jawabanmu

2014-03-01T23:11:25+07:00
sin ()=nk sin β/2
sin ()=√3 sin 60/2
sin ()= 1/2 √3
= 1/2 √3
=60
δm + 60 = 60 . 2
δm = 120-60
δm = 60 derajat