A flagstaff BC is fixed on the top of a tower AB. At a point P on the horizontal ground , an observer finds that the angles of elevation of the point C on the top of the flagstaff and the point B on the top of the tower are 20° AND 12° respectively. On walking a distance of 16 m towards the tower, the observer reaches a point Q AND FINDS THAT ∠CQB=8°.
(a) SHOW THAT B,C,P,&Q ARE CONCYCLIC.
(B)find the heights of
(I) the tower AB,
(ii) the FLAGSTAFF BC.