5.图中XOZ为一直线,若XY及YZ为圆的切线,使XY=2,YZ=1,⑴设半径为r,以r表XP及ZQ ; ⑵求该圆的半径6.图中,O是圆ABCDE的圆心.若∠AOD=110度 及∠ABC=85度 ,求(a)∠AEC ;(b)∠CED ..帮我把这两题解答了..
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![5.图中XOZ为一直线,若XY及YZ为圆的切线,使XY=2,YZ=1,⑴设半径为r,以r表XP及ZQ ; ⑵求该圆的半径6.图中,O是圆ABCDE的圆心.若∠AOD=110度 及∠ABC=85度 ,求(a)∠AEC ;(b)∠CED ..帮我把这两题解答了..](/uploads/image/z/12627879-15-9.jpg?t=5.%E5%9B%BE%E4%B8%ADXOZ%E4%B8%BA%E4%B8%80%E7%9B%B4%E7%BA%BF%2C%E8%8B%A5XY%E5%8F%8AYZ%E4%B8%BA%E5%9C%86%E7%9A%84%E5%88%87%E7%BA%BF%2C%E4%BD%BFXY%3D2%2CYZ%3D1%2C%E2%91%B4%E8%AE%BE%E5%8D%8A%E5%BE%84%E4%B8%BAr%2C%E4%BB%A5r%E8%A1%A8XP%E5%8F%8AZQ+%3B+%E2%91%B5%E6%B1%82%E8%AF%A5%E5%9C%86%E7%9A%84%E5%8D%8A%E5%BE%846.%E5%9B%BE%E4%B8%AD%2CO%E6%98%AF%E5%9C%86ABCDE%E7%9A%84%E5%9C%86%E5%BF%83.%E8%8B%A5%E2%88%A0AOD%3D110%E5%BA%A6+%E5%8F%8A%E2%88%A0ABC%3D85%E5%BA%A6+%2C%E6%B1%82%EF%BC%88a%EF%BC%89%E2%88%A0AEC+%3B%EF%BC%88b%EF%BC%89%E2%88%A0CED+..%E5%B8%AE%E6%88%91%E6%8A%8A%E8%BF%99%E4%B8%A4%E9%A2%98%E8%A7%A3%E7%AD%94%E4%BA%86..)
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