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[几何] 2016年理科 课标全国卷III 第16题 (直线与圆)

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isee posted 2016-6-8 23:13 |Read mode
Last edited by isee 2016-6-9 23:51如图,直线恒过圆上的定点$(-3,\sqrt 3)$,由特殊弦长,可知题中的垂线的倾斜角为120度。
从而直角梯形,另一腰长4。
3-16.png

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