Interesting Maths Q15 (Normal)
2012-02-05 9:55 pm
If tanx=(sinacosc-sinbsinc)/(cosacosc-cosbsinc)and tany=(sinasinc-sinbcosc)/(cosasinc-cosbcosc),find the value of tan(x+y).
回答 (1)
2012-02-07 3:59 am
收錄日期: 2021-04-13 18:31:49
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https://hk.answers.yahoo.com/question/index?qid=20120205000051KK00445