由a/sinB=b/sinC=c/sinA,得a=b=c.求详细答案
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发布时间:2024-10-23 03:15
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热心网友
时间:2024-11-04 19:56
正弦定理得:a/b=b/c=c/a
热心网友
时间:2024-11-04 19:57
a/sinA=b/sinB=c/sinC=2R
a/sinB=b/sinC->a/sinC=b/sinB=c/sinC->a=c
a/sinB=c/sinA->a/sinA=c/sinB=b/sinB->b=c
b/sinC=c/sinA->b/sinA=c/sinC=a/sinA->b=a
->a=b=c