http://i167.photobucket.com/albums/u159/karycheung-1994/479609cc.jpg
請詳列步驟
切勿以此方法答題thx
sin & = ab^2 over a^2b^3
=1 over ab
收錄日期: 2021-04-23 20:27:40
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080529000051KK01969