迎新晚会新闻稿怎么写:2004年希望杯初二初赛的几道题目有谁能讲解一下
来源:百度文库 编辑:杭州交通信息网 时间:2024/05/21 13:13:44
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