C is a point on the minor arc AB of the circle with the centre O .given angleACB =X degree and angleAOB=y degree, express y in terms of x.calculate x, if ACBO is a parallelogram Share with your friends Share 0 Manbar Singh answered this We have,∠AOB = y; ∠ACB = xNow, reflex∠AOB = 360°-∠AOB = 360°-yWe know that angle subtended by an arc at the centre is double the angle subtended by same arc at any point on the circle.So, reflex∠AOB = 2∠ACB⇒360°-y = 2x⇒y = 360° - 2x ......1 Since, AOBC is a parallelogram, then∠AOB = ∠ACB Opposite angles of parallelogram are equal⇒y = xNow, from 1, we getx = 360° - 2x⇒3x = 360°⇒x = 120° 2 View Full Answer Mohit.soni answered this abc -1 Rkvp answered this 2y = 180-x -1