如图 ab是圆o的直径 ac是圆o的弦 过点c作圆o的切线与ab的延长线交于点d 若角cab=30度求证:ac=cd (不好意思刚才没看到打漏字了。)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/28 20:10:06
![如图 ab是圆o的直径 ac是圆o的弦 过点c作圆o的切线与ab的延长线交于点d 若角cab=30度求证:ac=cd (不好意思刚才没看到打漏字了。)](/uploads/image/z/3699489-57-9.jpg?t=%E5%A6%82%E5%9B%BE+ab%E6%98%AF%E5%9C%86o%E7%9A%84%E7%9B%B4%E5%BE%84+ac%E6%98%AF%E5%9C%86o%E7%9A%84%E5%BC%A6+%E8%BF%87%E7%82%B9c%E4%BD%9C%E5%9C%86o%E7%9A%84%E5%88%87%E7%BA%BF%E4%B8%8Eab%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%BA%A4%E4%BA%8E%E7%82%B9d+%E8%8B%A5%E8%A7%92cab%3D30%E5%BA%A6%E6%B1%82%E8%AF%81%EF%BC%9Aac%3Dcd+%EF%BC%88%E4%B8%8D%E5%A5%BD%E6%84%8F%E6%80%9D%E5%88%9A%E6%89%8D%E6%B2%A1%E7%9C%8B%E5%88%B0%E6%89%93%E6%BC%8F%E5%AD%97%E4%BA%86%E3%80%82%EF%BC%89)
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