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  5. 請大大幫忙看一下，如何解？
Mathematics
Senior High
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110學撤升
110學撤升

請大大幫忙看一下，如何解？

【谷球】咯 右圖是由五個全等的正方形拼接而成,求tan ESA
b3數學 三角 1-4

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