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[几何] 求助：关于三棱锥的一棱的范围

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敬畏数学 Posted 2016-3-22 21:55 |Read mode

三棱锥S-ABC，AB=AC=SB=SC=4,BC=SA=a,，则a的范围——————？

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kuing Posted 2016-3-23 01:59

参考《撸题集》第407页题目 4.4.17.（2010辽宁理数12）的第（2）种情况。

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Author| 敬畏数学 Posted 2016-3-23 10:46

OK，谢谢。

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Author| 敬畏数学 Posted 2016-3-23 13:12

能否有个详细的解答过程？

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色k Posted 2016-3-23 13:36

回复 4# 敬畏数学

撸题集里面说得还不够详细吗？

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Author| 敬畏数学 Posted 2016-3-25 13:10

能来个有点代数味的东东吗？

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Author| 敬畏数学 Posted 2016-3-30 16:54

此题貌似选择题不是太难玩。但是如果是一个大题呢？

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游客 Posted 2016-3-31 09:12

三角形ABC饶BC旋转。

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