A. α2 x2/a2+ β2 y2/b2=1
B. α2 x2/a4+ β2 y2/b4=1
C. α2 x2/b4+ β2 y2/a4=1
D. α2 x2/b2+ β2 y2/a2=1
The tangent and normal to the ellipse 4x2+9y2 =36 at a point P on it meets the major axis in Q nd R respectively. If QR=4, then the eccentric angle of P is
If the polar of (2, -1) with respect to the ellipse 3x2+4y2=12 is ax+by+c=0 then the ascending order of a, b, c is
The total number of real tangents that can be drawn to the ellipse 3x2+5y2=32 and 25x2+9y2=450 passing through (3, 5) is
If the equation of the pair of tangents drawn from (1, 2) on the ellipse x2+2y2=2 is 3x2-4xy-y2+ax+by+c=0 then the ascending order of a, b, c is
The pole of the line y=x+2 e with respect to the ellipse x2+4y2-2x-6y-10=0 is
The equation of ellipse whose focus is (0, √a2-b2), directrix is y=a2/√a2-b2 and eccentricity is √a2-b2/a is