~~三角函數變變變~~(禮點一打)

2011-02-06 9:09 pm


(1 + sin θ ) / cos θ 

變成一個只含 tan 函數的式子。


回答 (4)

2011-02-06 9:29 pm
✔ 最佳答案
As follows:


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2011-02-06 14:19:18 補充:
我已把答案更新了=]

2011-02-06 18:56:34 補充:
哈...多謝哂雨後陽光兄...即是把(1+sinx)/cosx=tan(...)??

2011-02-07 00:29:57 補充:
答案已再次更新,亦再一次感謝你的指導!
2011-02-07 1:03 am
一開始轉做tanθ會否快些?
(1+sinθ)/cosθ
= secθ + tanθ
= √sec^2 θ + tanθ
= √(1 + tan^2 θ) + tan θ
但有根號比較複雜
2011-02-06 11:17 pm
You can well use Half Angle Formulas and Substitution methods ( t ) to get the appropriate answers.

Cheers!
2011-02-06 10:25 pm
我只是新手,一定不能和高手對戰的。


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