△ABC中,a^2+b^2-ab=c^2=2根号3S△ABC,求三角形形状 网上答案我看不懂S=absinC/2=√3ab/4c^2=2√3S=3ab/2所以:a^2+b^2-ab=c^2=3ab/2解得:a=b/2或者a=2b结合c^2=3ab/2得a=b/2时c=√3b/2或者a=2b时c=√3b.当a=b/2时c=√3b/2

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/29 21:40:41
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