三角函數的一題計算...

👨🏻‍🏫 學術台數學

[匿名]

2008-03-26 9:19 pm

sin^2 15 + cos^2 15 + tan^2 15 + cot^2 15 + sec^2 15 + csc^2 15 = ?

回答 (2)

STEVIE-G™

2008-03-26 9:41 pm

✔ 最佳答案

Please refer to the following solution:

圖片參考：http://hk.geocities.com/stevieg_1023/sincos.gif

👍 0 👎 0

景興

2008-03-26 9:36 pm

sin^2 15 + cos^2 15 + tan^2 15 + cot^2 15 + sec^2 15 + csc^2 15
=1+16+ 14
=31

👍 0 👎 0

收錄日期: 2021-04-27 16:38:07
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080326000051KK01352

檢視 Wayback Machine 備份