how are these green angles equal please explain. Share with your friends Share 0 Vartika Jain answered this Dear Student, ∠BAT = ∠BCAThis is because they both subtend arc AB. All the angles inscribed in a circle and subtended by the same chord in are equal. Hence, ∠BAT = ∠BCA 0 View Full Answer Harish R answered this here where is the centre of the circle . correct it 0