4. B and Care points on a circle, centre O. TCD is a tangent to the circle.
Angle BAC = 54
NOT TO
SCALE
D
(a) Find angle BOC, giving a reason for your answer.
(b) When is the origin, the position vector of point Cis

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.