F1F2 is the left and right focus of the ellipse, the line L passing through F2 intersects the ellipse at two points AB, the inclination angle of L is 60, the distance from F1 to L is 2, and the focal length of the ellipse is 3

F1F2 is the left and right focus of the ellipse, the line L passing through F2 intersects the ellipse at two points AB, the inclination angle of L is 60, the distance from F1 to L is 2, and the focal length of the ellipse is 3

Take f1h ⊥ AB from F1, and then follow H,
〈F1F2H=60°,
|F1H|/|F1F2|=sin