Jade

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發問 13 回答 13

2021-01-13 7:01 pm

How to prove cos(3pi/5)=((1-sqrt5)/4)?

2021-01-11 2:57 pm

how to show x = 1 / (1+2costheta)?

2021-01-02 3:23 pm

Trig question, what have I don't wrong? Solve (tan(2x)-tan(x))*(cos(3x)+cos(x))+2*cos(x)=2?

2020-12-31 12:47 pm

x=sec(theta), find maximum value of ((x^2 - 2)^2)/x^4 , x>=1?

2020-12-22 3:36 pm

Find tan(A-B) if tanA and tanB are roots of x^2 - (1+k)x +k = 0, 0<B<A<90?

2020-12-08 3:11 pm

Trigonometry problem?

2020-12-03 3:07 pm

a triangle ABC, how to prove sin^2(A)-sin^2(B)=sin(A-B)sinC?

2020-05-15 5:29 pm

有香港駕駛執照，可以免考 Class G換加拿大駕照嗎?聽說提交一封駕駛經驗證明書就可以，但我問過運輸署，他們回复只有駕駛執照細節證明。?

2015-10-11 4:51 am

香港圖書館有甚麽雜誌?

2015-10-11 4:50 am

香港圖書館有甚麽雜誌?

2015-10-06 1:10 pm

72*144 / 48 怎样巧算？

2007-06-23 3:59 am

急－那裡買ｔ恤布？

2007-06-23 3:58 am

急－那裡買ｔ恤布？

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