点c轨迹是以B 为原点1为半径的圆,过B作直线平行于OA,交圆于右边的点c为相对最长的OD,具体长度我就不算了
最新问答: 1、用四字短语或成语概括方仲永的三个阶段 一个正方形花坛,周长是144米,它的四周加宽3米,周长比原来多了多少米?面积比原来多了多少平方米? 儿童急走追黄蝶,牧童骑黄牛, 一个物体的质量为 2×107mg,这个物体可能是( ) as far as I know和as much as I know的区别? 英语短文改错 要有具体的解释一共有10个错误Dear Mike,Are you feeling any better?A 宿新市徐公店的中心思想 It's time to go to bed 同义句转换It's time ___ __ 《my.favourite.day》的作文,不少于五句 2,甲乙丙丁,四人共同购买一只船,甲付的钱是其余3人的1/4,乙付的钱比其余3人所付 詹天佑()挑着水桶去排水,()让工期推迟.填关联词. I believe that you 什么意思 1.一个三位数的百位数字、十位数字、个位数字依次是a、b、c(c> a),将百位数字与个位数字交换 "补课"用英文怎么说? 小学三年级语文课外作业下册答案 已知三角形ABC中,a:b:c=1:2:3,a=1,求a-2b+c/sinA+sinB+sinC Dear User:Congratulations!You have successfully registered y they are going to watch a movie _______ Friday night.A.IN B. I'm interested in reading novels.I think Harry Potty is very “天空和大海”用英语怎么说