請詳細步驟教我計下條 :
(不要網址回答)
答案是 : 80.06度
圖片參考：http://imgcld.yimg.com/8/n/HA00997022/o/701209240052413873366210.jpg
急!F5 more equations 1exq9
2012-09-25 3:51 am
回答 (2)
2012-09-25 5:12 am
✔ 最佳答案
We have12tanθ - (9/5)(1 + (tanθ)^2) <= 5
60tanθ - 9 - 9(tanθ)^2 <= 25
9tanθ^2 - 60tanθ + 34 <= 0
0.6253 <= tanθ <= 6.0413
So, the max. value of θ is arctan(6.0413) = 80.06
2012-09-25 3:58 am
Why don't you ask this in PHY zone?
收錄日期: 2021-04-13 19:00:00
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120924000051KK00524