不需要輔助線。 BC*AC=24; (BC-1)/BC= 1/AC,=> AC+BC=24
所有跟帖:
• 這是相似三角形法,也可以叫同角正切函數法,還要換算,我那是三角形麵積法,更直接 -嘚瑟一下- ♂ (204 bytes) () 04/12/2024 postreply 09:11:50
• 這是相似三角形法,也可以叫同角正切函數法,還要換算,我那是三角形麵積法,更直接 -嘚瑟一下- ♂ (204 bytes) () 04/12/2024 postreply 09:11:50
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