在△ABC中,若三个内角A,B,C满足(sinA-sinB)(sinB-sinC)(sinC-sinA...
发布网友
发布时间：2024-10-24 12:51
共2个回答
热心网友
时间：2024-11-07 01:47
sinA=a/2R sinB=b/2R sinC=c/2R
(sinA-sinB)(sinB-sinC)(sinC-sinA)=0
(a/2R-b/2R)(b/2R-c/2R)(c/2R-a/2R)=0
(a-b)(b-c)(c-a)=0
a=b b=c c=a
热心网友
时间：2024-11-07 01:43
sinA=a/2R sinB=b/2R sinC=c/2R
(sinA-sinB)(sinB-sinC)(sinC-sinA)=0
(a/2R-b/2R)(b/2R-c/2R)(c/2R-a/2R)=0
(a-b)(b-c)(c-a)=0
a=b b=c c=a
