我想問下點計θ的大小
sinθ = 3sin 10+sin 15
SINθ 問題
2007-04-11 10:16 pm
回答 (2)
2007-04-12 5:29 am
✔ 最佳答案
... 除左按計數機我都諗唔到其他方法sinθ = 3sin 10+sin 15
(你 按 sin 再按 10 ... 跟住 sin 再按 15)
sinθ = 3 (0.1736)+ (0.2588)
sinθ = 0.7796
(跟住按 shift sin 0.7796, 來搵 θ)
θ = 51.22
^^
參考: myself
2007-04-11 10:34 pm
禁機~
sinθ =3(0.1736) + 0.2588
= 0.5208 + 0.2588
= 0.7796
θ= sin^-1 (0.7796)
=51.239
sinθ =3(0.1736) + 0.2588
= 0.5208 + 0.2588
= 0.7796
θ= sin^-1 (0.7796)
=51.239
收錄日期: 2021-04-18 21:46:32
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070411000051KK02661