amath trigo

👨🏻‍🏫 學術台數學

2007-03-02 2:24 am

a)Prove tanx = (3-tanA)/(1-3tanA)
b)Hence sove the equation sin(x+(TT/4))=3cos(x-(TT/4)

回答 (1)

2007-03-02 3:04 am

✔ 最佳答案

係咪漏左d野?

參考: me

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