唔該呀.......
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Math 一問....
2008-05-10 3:52 am
回答 (1)
2008-05-10 4:43 am
✔ 最佳答案
(5sinα+6cosα)/(7cosα-3sinα)
=(5tanα+6)/(7-3tanα)
=[5(-4/3)+6]/[7-3(-4/3)]
=(-2/3)/11
=-2/33
收錄日期: 2021-04-23 20:32:38
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080509000051KK02095