(chatquestion)...A triangle ABC with vertices A = (2,5), B = (5,2) and C = (-1-1) inscribed on the curve xy - X-y-3 =0 and H = (a,a) is orthocenter. Let D, E and F be the feet of perpendiculars from A, B and C on BC, CA and AB respectively and inradius of ADEF isr then (A) Orthocenter of triangle ABC is (-1, -1) 13 (B) Equation of DE is x + y - 5 (C) r V2 units (D) r =V2 units

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