Jawabanmu

2014-06-04T15:17:54+07:00
1. 80 derajat
2. FPBnya 30
2014-06-04T15:19:14+07:00
90=2x3^2x5
120=2^3x3x5
KPK= 2^3x3^2x5=360
FPB= 2x3x5=30