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3.試問在坐標平面上原點至點(sin15°,sin75°)的距離為何? (A) (B) (C) (D)1
問題詳情
3.試問在坐標平面上原點至點(sin15°,sin75°)的距離為何?
(A)
(B)
(C)
(D)1
參考答案
上一篇 :
2.若A(1,3)、B( - 4,7)及C(x,y)為平面上三點,且 ,則(x,y)為何? (A)(15, - 14) (B)( - 15,14) (C)( - 14,15) (D)(14, - 1
下一篇 :
4.在數線上有 ,若 的中點為 ,則x= (A) -23 (B) -22 (C) -21 (D)-20
資訊推薦
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