Jawabanmu

2014-08-24T12:43:32+07:00
QPR = 50 DERAJAT
PQR = 68 DERAJAT
RPQ = 62 DERAJAT
2014-08-24T12:45:06+07:00
BAC = 180 - 50 - 68 =62

JADI QPR = 62°
PQR = 68°
PRQ = 50°