In the given figure, QAP is the tangent at point A and PBD is a straight line.
If ∠ACB = 36° and ∠APB = 42°, find:
(i) ∠BAP
(ii) ∠ABD
(iii) ∠QAD
(iv) ∠BCD
PAQ is a tangent and AB is a chord of the circle.