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 = 0 is 12:00 a. M. H = 0. 5 cosine (startfraction pi over 12 endfraction t) + 9. 5 h = 0. 5 cosine (startfraction pi over 6 endfraction t) + 9. 5 h = cosine (startfraction pi over 12 endfraction t) + 9 h = cosine (startfraction pi over 6 endfraction t) + 9.