【题目】已知∠MAN=30°,点B在射线AM上,且AB=6,点C在射线AN上. (1)若△ABC是直角三角形,求AC的长; (2)若△ABC是等腰三角形,则满足条件的C点有个; (3)设BC=x,当△ABC唯一确定时,直接写出的取值范围. 试题答案 在线课程 【答案】(1)
需要原版《Gretchen am Spinnrade》钢琴谱 请长按以下二维码回复“gas” (回复曲名也可以) END 音乐与生活 (6000多节免费的在线音乐课) 音乐与生活 后台回复书名,观看整套书的名师教学视频。如回复:599 后台有的教程:小汤、大汤、拜厄、孩哈、哈农、599、849...
【题目】My name is Jim. I am a student. At school, I have a good friend. His name is Mike. He is tall. He has short hair. We are classmates, too. We go to school at 7:00 o'clock. We go home at 5:00. It's 3:15 now. It's time to play games. Let's go to the pl...