PQRS isa cyclic quadrilateral which PQ = PS. PT is a tangent to the circle and PQ makes an angle of 50o with the tangent as shown in the figure. What is the size of QRS?
Attached Figure / Diagram
A
50o
B
40o
C
110o
D
80o
E
100o
Verified Correct Answer: E.
Step-by-Step Mathematical Solution
< PSQ = < QPT = 50º
In \(\triangle\) PQS, PS = PQ (given) base angles of an isosceles triangle.
< QRS = 180º - < SPQ (opp
Source: Myschool Past Questions Archive (Record #32771)