Referring to the attached pic:
A quadrilateral ACQR is inscribed in a circle. Diagonals are drawn to intersect at T such that angle
Both S, P and B are points outside the circle.
AC and RQ are extended to meet at P such that angle
CQ and AR are extended to meet at B such that angle
QC is extended to S, forming triangle SAC where SC = AC
Find the angle ASC.