设向量OA=(3,-根号3),向量OB=(cos阿尔法,sin阿尔法),其中0≤阿尔法≤π/21.若|向量AB|=根号13,求tan阿尔法的值 2.求三角形AOB面积的最大值.
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![设向量OA=(3,-根号3),向量OB=(cos阿尔法,sin阿尔法),其中0≤阿尔法≤π/21.若|向量AB|=根号13,求tan阿尔法的值 2.求三角形AOB面积的最大值.](/uploads/image/z/1710140-68-0.jpg?t=%E8%AE%BE%E5%90%91%E9%87%8FOA%3D%EF%BC%883%2C-%E6%A0%B9%E5%8F%B73%EF%BC%89%2C%E5%90%91%E9%87%8FOB%3D%28cos%E9%98%BF%E5%B0%94%E6%B3%95%2Csin%E9%98%BF%E5%B0%94%E6%B3%95%29%2C%E5%85%B6%E4%B8%AD0%E2%89%A4%E9%98%BF%E5%B0%94%E6%B3%95%E2%89%A4%CF%80%2F21.%E8%8B%A5%7C%E5%90%91%E9%87%8FAB%7C%3D%E6%A0%B9%E5%8F%B713%2C%E6%B1%82tan%E9%98%BF%E5%B0%94%E6%B3%95%E7%9A%84%E5%80%BC+2.%E6%B1%82%E4%B8%89%E8%A7%92%E5%BD%A2AOB%E9%9D%A2%E7%A7%AF%E7%9A%84%E6%9C%80%E5%A4%A7%E5%80%BC.)
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