1)
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Find x for
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2) i) Express
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in term of difference of sine functions.
ii) By mathematical induction, prove the following equation for all positive integer n.
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iii) Find the value of
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iv) Show that
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v) Find cos(72) in surd form.
trigonometric function (M2)
2011-02-27 12:00 am
回答 (1)
2011-02-27 3:14 am
✔ 最佳答案
http://img20.imageshack.us/img20/3996/42345389.png圖片參考：http://img20.imageshack.us/img20/3996/42345389.png
2011-02-26 23:07:20 補充：
If you don't see it, refer to here:
http://i1090.photobucket.com/albums/i376/Nelson_Yu/2.jpg
收錄日期: 2021-04-23 23:22:57
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110226000051KK00837