Answer:
Step-by-step explanation:
Since, If a quadrilateral is inscribed in a circle then the sum of one pair of opposite angles must be equal to 180°.
And, here quadrilateral OPQR is inscribed in circle N.
Thus, -------(1)
And, -------(2)
According to the question,,
And, -------(3)
We have to find out or .
Thus, from equation (1), ⇒
Therefore, From equation (3),
⇒