Math Chapter Wise Tangent, Normal, Increasing, Decreasing And Maxima/Minima Of A Function Of One Variable English MCQ UKPSC Lecturer (Mains) 2020 Q.The semi-vertical angle of right circular cone of given surface area and maximum volume is: A-1 2 sin 3 B-1 2 sin 3 C-1 3 sin 4 D-1 1 sin 3 Show answer Correct answer: -1 1 sin 3