條數要証明佢地係identitie:
no1
tanθsinθ tanθ-sinθ
------------- = --------------
tanθ+sinθ tanθsinθ
no2
cos^2θ-sin^2θ 1-tanθ
------------------ = ----------------
1+2sinθcosθ 1+tanθ
我証明唔到....有冇高手?
有2條數計唔掂...help!
2008-03-27 10:51 pm
回答 (1)
2008-03-27 11:38 pm
✔ 最佳答案
如下~圖片參考：http://i248.photobucket.com/albums/gg191/ncy_0916/identitie.jpg?t=1206603509
圖片參考：http://i248.photobucket.com/albums/gg191/ncy_0916/identitie2.jpg?t=1206603521
收錄日期: 2021-04-23 23:01:22
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080327000051KK01822