How do I simplify cos(θ+ 2 Pi) ?
(Pi=3.14 ar~~)
Thank you.
One question about cosθ
2008-04-07 9:57 pm
回答 (1)
2008-04-07 10:48 pm
✔ 最佳答案
As 2 Pi = 360 degree ,So cos(θ+ 2 Pi) = cosθ.
It is because when a point is turned 360 degree(2 Pi),
that point is at the same place.
參考: ME
收錄日期: 2021-04-15 17:28:33
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080407000051KK00945