双曲线A^2分之X^2 -B^2分之Y^2=1(a>0,b>0)的渐近线与实轴夹角为A,过双曲线的焦点垂直于实轴的弦长为?
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![双曲线A^2分之X^2 -B^2分之Y^2=1(a>0,b>0)的渐近线与实轴夹角为A,过双曲线的焦点垂直于实轴的弦长为?](/uploads/image/z/3813269-5-9.jpg?t=%E5%8F%8C%E6%9B%B2%E7%BA%BFA%5E2%E5%88%86%E4%B9%8BX%5E2+-B%5E2%E5%88%86%E4%B9%8BY%5E2%3D1%28a%3E0%2Cb%3E0%29%E7%9A%84%E6%B8%90%E8%BF%91%E7%BA%BF%E4%B8%8E%E5%AE%9E%E8%BD%B4%E5%A4%B9%E8%A7%92%E4%B8%BAA%2C%E8%BF%87%E5%8F%8C%E6%9B%B2%E7%BA%BF%E7%9A%84%E7%84%A6%E7%82%B9%E5%9E%82%E7%9B%B4%E4%BA%8E%E5%AE%9E%E8%BD%B4%E7%9A%84%E5%BC%A6%E9%95%BF%E4%B8%BA%3F)
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