Q87. What is the joint equation of the pair of lines perpendicular to the lines represented by the equation x2 - 2xy - y2 = 0?Mathematics — Analytic Geometry — Question 87 of 217A. x2 + 2xy - y2 = 0B. x2 - 2xy - y2 = 0C. x2 - 2xy + y2 = 0D. x2 + 2xy + y2 = 0Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →