question_answer

P, Q and R are three points on a circle. The tangent at R meets QP produced at T. Given that \[\angle PTR=36{}^\circ \] and \[\angle PRT=48{}^\circ \], find the angle subtended by QP at the centre 'O' of the circle.

A)  \[102{}^\circ \]                       

B)  \[98{}^\circ \]           

C)  \[110{}^\circ \]           

D)  \[84{}^\circ \]