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  3. PQ is the diameter of the circle with center O (6,0) and the coordinates of pola

PQ is the diameter of the circle with center O (6,0) and the coordinates of pola

游客2024-01-12  45
问题 PQ is the diameter of the circle with center O (6,0) and the coordinates of polar P is (3, 2)
Quantity A: the coordinate of point Q
Quantity B: (9,-2)
选项 A、Quantity A is greater.
B、Quantity B is greater.
C、The two quantities are equal.
D、The relationship cannot be determined from the information given.
答案 C
解析 O是PQ的中点，假设Q的坐标为(x，y)，那么(x+3)/2=6，(y+2)/2=0，因此x=9，y=-2，Q点坐标为(9，-2)，选择C。
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