jacob is riding his bike down the street in runville NY at a constant speed when a nail gets caught in one of his tires. The height of ther nail above ground in inces can be represented by the trigonometci fincvtion F(t)=-15cos(.6pi t)+15 where t represents the time in seconds since the nail first caight in the tire. A) determine the period of f(x). Interpret what the period means in the context B) does the height of the nail ever reach 3.5 inches above the ground?