MathematicsMedium74×since 2004Q3722Let a circle of radius 4 be concentric to the ellipse 15x2+19y2=28515 x^{2}+19 y^{2}=28515x2+19y2=285. Then the common tangents are inclined to the minor axis of the ellipse at the angle :Aπ4\frac{\pi}{4}4πBπ3\frac{\pi}{3}3πCπ6\frac{\pi}{6}6πDπ12\frac{\pi}{12}12πCheck answerSkip