In Fig. 10.11, AOC is a diameter of the circle and arc AXB =1/2 arc BYC. Find ∠BOC. AOC is a diameter of the circle and arc AXB =1/2 arc BYC. Find ∠BOC. In Fig. 10.11 July 2, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 9 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related