已知三角形ABC中角A=1/2角B=1/3角C则它的三条边之比为A,1:1:根号3,B,1:根号2:根号3B,1:根号2:根号3 C 1:2:3 ,D,1:根号3:2

问题描述:

已知三角形ABC中角A=1/2角B=1/3角C则它的三条边之比为A,1:1:根号3,B,1:根号2:根号3
B,1:根号2:根号3 C 1:2:3 ,D,1:根号3:2