在三角形ABC中,a,b,c分别为内角A,B,C的对边,且2asinA=(2b+c)sinB+(2a+b)sinC在三角形ABC中,a,b,c分别为内角A,B,C的对边,且2asinA=(2b+c)sinB+(2c+b)sinC (1) 求A的大小我在其他地方看到这样的解 .2asinA=(
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![在三角形ABC中,a,b,c分别为内角A,B,C的对边,且2asinA=(2b+c)sinB+(2a+b)sinC在三角形ABC中,a,b,c分别为内角A,B,C的对边,且2asinA=(2b+c)sinB+(2c+b)sinC (1) 求A的大小我在其他地方看到这样的解 .2asinA=(](/uploads/image/z/4110467-59-7.jpg?t=%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2Ca%2Cb%2Cc%E5%88%86%E5%88%AB%E4%B8%BA%E5%86%85%E8%A7%92A%2CB%2CC%E7%9A%84%E5%AF%B9%E8%BE%B9%2C%E4%B8%942asinA%3D%EF%BC%882b%2Bc%EF%BC%89sinB%2B%EF%BC%882a%2Bb%EF%BC%89sinC%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2Ca%2Cb%2Cc%E5%88%86%E5%88%AB%E4%B8%BA%E5%86%85%E8%A7%92A%2CB%2CC%E7%9A%84%E5%AF%B9%E8%BE%B9%2C%E4%B8%942asinA%3D%EF%BC%882b%2Bc%EF%BC%89sinB%2B%EF%BC%882c%2Bb%EF%BC%89sinC+%281%29+%E6%B1%82A%E7%9A%84%E5%A4%A7%E5%B0%8F%E6%88%91%E5%9C%A8%E5%85%B6%E4%BB%96%E5%9C%B0%E6%96%B9%E7%9C%8B%E5%88%B0%E8%BF%99%E6%A0%B7%E7%9A%84%E8%A7%A3+.2asinA%3D%28)
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