解:当知道圆的一条弦长和该弦所对的圆�角时,常是经过这条弦的一个端点,作出圆的一条直径,然后利用圆�角定理,把所有的已知条件都迁移到刚才所作的 Template




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tomski解:当知道圆的一条弦长和该弦所对的圆�角时,常是经过这条弦的一个端点,作出圆的一条直径,然后利用圆�角定理,把所有的已知条件都迁移到刚才所作的 coloring