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2011年第12期《数学通报》的数学问题第2038号问题是一道源自经典例题的好题,我在学习了2012年第1期上出题者刘运宜老师的解答过程[1]后,发现他的解法涉及到了余弦定理,这对于初中生来说是有难度的.我从初中生的学习
Mathematical Problems in Mathematics Bulletin No.2038 is a good topic from classical examples. After learning the solution process of the teacher Liu Yunyi in the first issue of 2012 [1], I found that His solution involves the cosine theorem, which is difficult for junior high school students. I learn from junior high school students