POQ is a line . Ray OR is perpendicular to line PQ . OS is another Ray lying between rays OP and OR . Prove that angle ROS = 1/2(angle QOS - angle POS).

POQ is a line . Ray OR is perpendicular to line PQ . OS is another Ray

1.	POQ is a line . Ray OR is perpendicular to line PQ . OS is another Ray lying between rays OP and OR . Prove that angle ROS = 1/2(angle QOS - angle POS).
Answer» POQ is a line . Ray OR is perpendicular to line PQ . OS is another Ray lying between rays OP and OR . Prove that angle ROS = 1/2(angle QOS - angle POS).