In the given figure, PQ is a chord passing through the centre 'O' of the circle. Calculate PQS.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 20o.
The sum of opposite angles of a cyclic quadrilateral is 180º
Given that
∠QRS = 110º
Hence ∠SPQ = 180 - 110 = 70º
∠QSP = 90º (angle in a semi-circle)
Hence, PQS = 180 - 90 - 70 = 20º