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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
44
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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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