The right focus of hyperbola C x ^ 2 / A ^ 2-y ^ 2 / b ^ 2 = 1 (a greater than 0, b greater than 0) is f passing F, and the intersection C of straight line with slope root 3 is at two points a and B If the vector AF = 4, find the eccentricity of C with the vector FB

The right line of hyperbola is the right straight line of the right hyperbola. The points B and a are the vertical lines of this line, and the vertical feet are C and D, and then the point B is the BH, which is perpendicular to H. let: ?? = m, then ???||/ |b and a are the vertical lines of this line. The vertical feet are C, D, D, and then the point B is B, B, B, B, B, B, B, B, B, B, B, B, B, B, B, B, B, B, B, a = m / e, ||||||||||||m) / E, because the angle DAB = 60

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