如图,△ABC内切于 ⊙o,直线EF是经过A点的 ⊙o的切线,BC是 ⊙O的直径,交AD于点M,AC=AD,∠EAB=30°[1]求∠ACB的度数,【2】写出三条于A相关的结论【3】若MB=1,求 ⊙o的直径.我是新手,无太多财富,这道题
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![如图,△ABC内切于 ⊙o,直线EF是经过A点的 ⊙o的切线,BC是 ⊙O的直径,交AD于点M,AC=AD,∠EAB=30°[1]求∠ACB的度数,【2】写出三条于A相关的结论【3】若MB=1,求 ⊙o的直径.我是新手,无太多财富,这道题](/uploads/image/z/13301745-33-5.jpg?t=%E5%A6%82%E5%9B%BE%2C%E2%96%B3ABC%E5%86%85%E5%88%87%E4%BA%8E+%E2%8A%99o%2C%E7%9B%B4%E7%BA%BFEF%E6%98%AF%E7%BB%8F%E8%BF%87A%E7%82%B9%E7%9A%84+%E2%8A%99o%E7%9A%84%E5%88%87%E7%BA%BF%2CBC%E6%98%AF+%E2%8A%99O%E7%9A%84%E7%9B%B4%E5%BE%84%2C%E4%BA%A4AD%E4%BA%8E%E7%82%B9M%2CAC%3DAD%2C%E2%88%A0EAB%3D30%C2%B0%5B1%5D%E6%B1%82%E2%88%A0ACB%E7%9A%84%E5%BA%A6%E6%95%B0%2C%E3%80%902%E3%80%91%E5%86%99%E5%87%BA%E4%B8%89%E6%9D%A1%E4%BA%8EA%E7%9B%B8%E5%85%B3%E7%9A%84%E7%BB%93%E8%AE%BA%E3%80%903%E3%80%91%E8%8B%A5MB%3D1%2C%E6%B1%82+%E2%8A%99o%E7%9A%84%E7%9B%B4%E5%BE%84.%E6%88%91%E6%98%AF%E6%96%B0%E6%89%8B%2C%E6%97%A0%E5%A4%AA%E5%A4%9A%E8%B4%A2%E5%AF%8C%2C%E8%BF%99%E9%81%93%E9%A2%98)
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