Use a calculator to find the approximate value of the expression. round the answer to two decimal places.

the cosine of the complimentary angle of 60°.

a.

0.50

c.

0.25

b.

0.86

d.

0.71

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.