IIT-JEE Advanced 2022 Maths Paper 1 Problem 18

Problem

Consider the ellipse x²/4 + y²/3 = 1. Let H(α, 0), 0 < α < 2, be a point. A straight line drawn through H parallel to the y-axis crosses the ellipse and its auxiliary circle at points E and F respectively, in the first quadrant. The tangent to the ellipse at the point E intersects the positive x-axis at a point G. Suppose the straight line joining F and the origin makes an angle φ with the positive x-axis.

Match the following.

List-1List-2
(I) If φ = π/4, then the area of the triangle FGH is(P) (√3 – 1)4/8
(II) If φ = π/3, then the area of the triangle FGH is(Q) 1
(III) If φ = π/6, then the area of the triangle FGH is(R) 3/4
(IV) If φ = π/12, then the area of the triangle FGH is(S) 1/2√3
(T) 3√3/2

Solution

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