SAT2 主要是题干不懂--------------------------------------------------------------------------------42.Which of the following expresses the polar point (3,) in rectangular coordinates?(A) (–1.7,–3.14) (B) (–0.87,0.5) (C) (1.5,3.14) (D) (–2.6,1.5) (E) (0.78,2.3)
问题描述:
SAT2 主要是题干不懂
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42.Which of the following expresses the polar point (3,) in rectangular coordinates?
(A) (–1.7,–3.14)
(B) (–0.87,0.5)
(C) (1.5,3.14)
(D) (–2.6,1.5)
(E) (0.78,2.3)
答
选D题目的意思是:下列哪个直角坐标系中的点可以表示为在极坐标中为(3,)的点.极坐标只需要一个原点和一条基准坐标(一条射线)极坐标(r,θ)中r代表坐标点距离原点的距离,而θ代表该点与原点连线与基准射线的夹角...