The height, h , in feet of the tip of the hour hand of a wall clock varies from 9 feet to 10 feet. Which of the following equations can be used to model the height as a function of time, t , in hours? Assume that the time at t is equal to 0 is 12:00 a.m.
Answer
A
h is equal to 0 point 5 cosine open paren pi over 6 t close paren plus 9 point 5
B
h is equal to cosine of open paren pi over 6 t close paren plus 9
C
h is equal to 0 point 5 cosine open paren pi over 12 t close paren plus 9 point 5
D
h is equal to cosine of open paren pi over 12 t close paren plus 9