please help me to solve this question.(Q.21 only)
圖片參考：http://imgcld.yimg.com/8/n/HA07906583/o/701110150037813873477900.jpg
Math App of trig. in 3-D%(20s)
2011-10-15 9:19 pm
回答 (1)
2011-10-15 9:55 pm
收錄日期: 2021-04-23 23:24:50
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20111015000051KK00378