(ii) ABC is a triangle whose vertices are A(1, -1), B(0, 4) and C(-4, 4). D is the midpoint of BC. Find the: (a) coordinates of D. (b) equation of the median AD.
(iii) In the given figure, O is the centre of the circle. PQ is a tangent to the circle at T. Chord AB produced meets the tangent at P. AB = 9 cm, BP = 16 cm, ∠PTB = 50° ∠OBA = 45°
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