初二数学和英语!帮帮忙啊!谢谢啊啊!
一艘海伦位于灯塔P的北偏东60°A处,它沿正南方向航行70海里后,到达位于灯塔P的南偏东30°的B处,求此时海伦至灯塔P的距离(结果保留根号)
在山坡上植树,要求相邻两数间的水平距离为6米,测得山坡的倾斜角为30°,求相邻两数间的斜坡面的距离.
以上两道题请老师写出过程,谢谢!
根据句意及英文释义用相应的单词填空
They________(collectmoneytogether)500dollarstohelothatpoorfamilylastmonth
Ilikeallthepanintingshere,butthisoneis_____(especially)good
wesharea_____(sharedbytwoormorepeople)goal:webothwanttogointothatuniversity
IsNewYorkthe_____(acitywhichisthecenterofgovernmentofacountry)oftheUSA
Theycannotspeakchineseatalltheyareboth_____(apersonwhocomesfromanothercountry)