Please solve on papar step by step Share with your friends Share 0 Kavita Verma answered this Dear Student, ∠ROP = ∠ROQ = 90° ....(as ray OR is perpendicular to PQ)∠POS + ∠ROS = ∠ROQAdding ∠ROS both sides, we get,∠POS + ∠ROS + ∠ROS = ∠ROQ + ∠ROS2∠ROS = ∠QOS - ∠POS ....(as ∠ROQ + ∠ROS = ∠QOS)∠ROS = 12∠QOS - ∠POS Regards, 0 View Full Answer