The function h)t)=25-10cos(pi/3 t) gives the height above the ground, in feet, of a passenger on a Ferris wheel t minutes after the ride begins. During one revolution of the ferris wheel, for how many minutes is the passenger at least 25 feet above the ground?

Question

anonymous · Answer

yeah dont really understand how to do that

anonymous · Answer

okay so 25 is gone now. which leaves me with -10cos (pi/3 t)=0

So from there I take the inverse of cos?

anonymous · Answer

what does that give me?

anonymous · Answer

so i'm left with pi/3 t=0?