AB is a diameter of a circle with centre OF and DO|| CB. If angle BCD= 120°, calculate angle BAD, angle ABD, angle CBD and angle ADC. Also show that ∆ AOD is an equilateral triangle.
AB is a diameter of a circle with centre Of and DO parallel to CB. If angle BCD = 120°, calculate angle BAD, ABD, CBD, ADC. Also show that ∆ AOD is an equilateral triangle.