(本题满分10分)如图，热气球的探测器显示，从热气球A看一栋大楼顶

(本题满分10分)如图，热气球的探测器显示，从热气球A看一栋大楼顶部B的俯角为30°，看这栋大楼底部C的俯角为60°，热气球A的高度为240米，求这栋大楼的高度．

答案

160

解析:略

相关题目

阅读下面的文字，完成小题。方月饼严歌苓月饼方的？想

阅读下面的文字，完成小题。方月饼严歌苓月饼方的？想不通。也想不通怎么就比我们曾经那些圆的贵。付钱时，手指头乱了。一只方月饼值我一小

After _______ practice，Lang Lang is a well-known pianist now． A．so many ye

After _______ practice，Lang Lang is a well-known pianist now． A．so many year B．so many years C．so many year's

中华民族精神是中华民族永远的精神火炬。下列对中华民族

中华民族精神是中华民族永远的精神火炬。下列对中华民族精神的认识，正确的是( ) ①维系中华各族人民共同生活的精神纽带 ②推动中华民族走向繁

2010年广州亚运会上，刘翔重归赛场，以打破亚运记录的方式

2010年广州亚运会上，刘翔重归赛场，以打破亚运记录的方式夺得110米跨栏的冠军。他采用蹲踞式起跑，在发令枪响后，左脚迅速蹬离起跑器，在向前加

--Have you seen Mr. King these days?---No, he _________ Shanghai for an internat

--Have you seen Mr. King these days?---No, he _________ Shanghai for an international meeting. He’ll come back in three days.A. has gone to B. has been to C. has gone in D. has been i

The soldier gave life to his motherland, So his ____________ is heavier than

The soldier gave life to his motherland, So his ____________ is heavier than Mount Tai . A. die B. dead C.died D.death

对下面文段中加点词的解释有错误的一项是（2分）( ) 吾

对下面文段中加点词的解释有错误的一项是（2分）( ) 吾恂恂而起，视其缶，而吾蛇尚存，则弛然而卧。谨食之，时而献焉。退而甘食其土之有，以

How to Train your Dragon by British author Cressida Cowell is one of the bes

How to Train your Dragon by British author Cressida Cowell is one of the best pieces of children's literature. A child can make a whole alternative universe with a vivid imagination and Toothles

(本题满分10分)如图，热气球的探测器显示，从热气球A看一栋大楼顶

答案

相关题目

最新题目