选择题:△ABC 的内角 A, B, C 所对边分别为 a, b, c, 若 b=3, c=2, △ABC 的面积为 2sinB, 则 cosA=() 题目分类:高考 题目类型:选择题 查看权限:VIP 题目内容: △ABC 的内角 A, B, C 所对边分别为 a, b, c, 若 b=3, c=2, △ABC 的面积为 2sinB, 则 cosA=() A.A B.B C.C D.D 参考答案: 答案解析:
_________he was poor himself, he tried his best to help the people in need. _________he was poor himself, he tried his best to help the people in need. 分类:高考 题型:选择题 查看答案
在四棱锥 P﹣ ABCD 中, 底面 ABCD 是矩形, PA⊥底面 ABCD, 且 PA=AB, AD = √3AB,则二面角 P﹣ CD﹣ B 的大小为() 在四棱锥 P﹣ ABCD 中, 底面 ABCD 是矩形, PA⊥底面 ABCD, 且 PA=AB, AD = √3AB,则二面角 P﹣ CD﹣ B 的大小为() 分类:高考 题型:选择题 查看答案
I think the coffee beans are from Brazil, ________ I’m not completely sure. I think the coffee beans are from Brazil, ________ I’m not completely sure. 分类:高考 题型:选择题 查看答案
—Im afraid we cant work out the math problem________the teacher helps us.—Thats —Im afraid we cant work out the math problem________the teacher helps us.—Thats true. Its too diffic 分类:高考 题型:选择题 查看答案