prove
tanQ* (1-sinQ)/(1+cosQ)=(1/tanQ)*(1-cosQ)/(1+sinQ)
thx a lot
Math about cosQ
2008-02-29 7:50 am
回答 (1)
2008-02-29 8:08 am
收錄日期: 2021-04-25 17:29:08
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080228000051KK03471