Question

please answer the question, if u answer I'll mark you as brain list​

Answer 1

hope, it helps you.

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Answer 2

Step-by-step explanation:

angle ROS + angle POS = 90°

angle POS + angle ROS = 180°

angle POS + angle QOS = 2×90

=> angle POS + angleQOS = 2( angleROS+anglePOS)

=> 2(angleROS)+2(anglePOS)=anglePOS +angleQOS

=> 2(angleROS) =angleQOS -2(anglePOS)+anglePOS

=> 2(angleROS) = angleQOS - anglePOS

=> angle ROS = 1/2(angle QOS - angle POS)