a:b:c=sin A:sin B:sin C=2:3:4
c²>a²+b²
△ABC是钝角三角形
在△ABC中,sinA:sinB:sinC=2:3:4,则△ABC是什么三角形,
在△ABC中,sinA:sinB:sinC=2:3:4,则△ABC是什么三角形,
数学人气：978 ℃时间：2019-11-18 21:36:13
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