求一道数学题,简便算法三角形ABC中,角A等于75度,AB等于根号2,AC等于根号3,求BC长?(不得使用余弦定理)再提醒一次,不得使用余弦定理,请注意!
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![求一道数学题,简便算法三角形ABC中,角A等于75度,AB等于根号2,AC等于根号3,求BC长?(不得使用余弦定理)再提醒一次,不得使用余弦定理,请注意!](/uploads/image/z/435316-4-6.jpg?t=%E6%B1%82%E4%B8%80%E9%81%93%E6%95%B0%E5%AD%A6%E9%A2%98%2C%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%95%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2C%E8%A7%92A%E7%AD%89%E4%BA%8E75%E5%BA%A6%2CAB%E7%AD%89%E4%BA%8E%E6%A0%B9%E5%8F%B72%2CAC%E7%AD%89%E4%BA%8E%E6%A0%B9%E5%8F%B73%2C%E6%B1%82BC%E9%95%BF%3F%EF%BC%88%E4%B8%8D%E5%BE%97%E4%BD%BF%E7%94%A8%E4%BD%99%E5%BC%A6%E5%AE%9A%E7%90%86%EF%BC%89%E5%86%8D%E6%8F%90%E9%86%92%E4%B8%80%E6%AC%A1%EF%BC%8C%E4%B8%8D%E5%BE%97%E4%BD%BF%E7%94%A8%E4%BD%99%E5%BC%A6%E5%AE%9A%E7%90%86%EF%BC%8C%E8%AF%B7%E6%B3%A8%E6%84%8F%EF%BC%81)
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