4. Figure shows two circles, centre O and P, which touch at the point T. The line AT is the tangent to both circles at T
where AT 8cm, AP = 10 cm and AO = 17 cm.
Given that OCDBA is a straight line where D is the midpoint of BC, calculate
(a) the length, in cm, of OT,
(b) the length, in cm, of OP,
(c) the size, in degrees to 3 significant figures, of PAO,
(d) the length, in cm to 3 significant figures, of PD,
(e) the length, in cm to 3 significant figures, of BC,
(f) the length, in cm to 3 significant figures, of AB.
