一題數計計計&計計計.....
計到去3 cos² x + cos x - 2 = 0
跟住應該點solve佢????
0 </ x </ 360
maths一題計計下吾識計落去= = HELP!!!
2010-03-28 8:36 am
回答 (1)
2010-03-28 9:14 am
✔ 最佳答案
======================================================圖片參考：http://img185.imageshack.us/img185/663/12394601.png
2010-03-28 01:15:04 補充：
http://img185.imageshack.us/img185/663/12394601.png
收錄日期: 2021-04-23 23:21:58
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100328000051KK00045