1.tanx
2.cosx
3.sinx
express the following trigonometric function in terms of t when tan(x/2)=t?
2015-04-12 2:23 am
回答 (1)
2015-04-12 3:03 am
✔ 最佳答案
tanx = 2t/(-t^2+1)cosx = (1-t^2)/(1+t^2)
sinx = 2t/(1+t^2)
收錄日期: 2021-05-01 15:19:55
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20150411182310AA02UyM