中科新闻网春光中学:2004年希望杯初二初赛的几道题目有谁能讲解一下
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选择题
6.Given in the △ABC,a,b,c are three sides of the triangle,and 3/a=2/b+1/c,then ∠A is
A.acute angle
B.right angle
C.obtuse angle
D.acute angle or obtuse angle
6.Given in the △ABC,a,b,c are three sides of the triangle,and 3/a=2/b+1/c,then ∠A is
A.acute angle
B.right angle
C.obtuse angle
D.acute angle or obtuse angle
D.acute angle or obtuse angle