Math Chapter Wise Sphere, Cone And Cylinder English MCQ UP PCS (Pre) 1995 Q.The cone reciprocal to the cone 2 2 2 ax by cz 0 is– A2 2 2 x y z 0 a b c B2 2 2 x y z 0 a b c C2 2 2 x y z yz zx xy 0 a b c bc ca ab Dnone of these Show answer Correct answer: 2 2 2 x y z 0 a b c