A pendulum swings from the vertical through an angle of 15 degrees on each side of the vertical. If the pendulum is 90 cm long, what is the distance, x cam, between its highest and lowest points?
http://photouploads.com/images/126291237.jpg
http://photouploads.com/?v=126291237.jpg
easy maths
2012-06-29 8:52 am
回答 (1)
2012-06-29 4:00 pm
✔ 最佳答案
Here are the solutions:圖片參考：http://imgcld.yimg.com/8/n/HA00108663/o/701206290003113873411890.jpg
2012-06-29 08:01:18 補充：
sorry, too small, please enlarge to 150%
參考: knowledge
收錄日期: 2021-04-20 13:45:38
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120629000051KK00031