2. If cos(θ+10°) =0.577, thenθ=?
更新1:
我想問你用計數機按鍵的方法,因為老師未教就比份卷我答?
F.2 Maths Questions
回答 (3)
2008-12-26 4:31 am
2008-12-26 4:39 am
Thank you so much!
2008-12-26 2:43 am
1.
θ=25.5
2
θ+10=54.7
θ=44.7
θ=25.5
2
θ+10=54.7
θ=44.7
收錄日期: 2021-04-19 13:15:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081225000051KK01145