Question 1152589
The function h(t)=25-10cos(pi/3x) gives the height above the ground, in feet, of a passenger on a ferris wheel x 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?
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You should clarify:
cos((pi/3)x) ?
Or cos(pi/(3x)) ?
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Also, it's h(x)
h(x)=25-10cos(x*pi/3)
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25 is the mid-line of the sinusoid, so it's 1/2 of the cycle.
Once cycle is 2pi*(3/pi) = 6 minutes
1/2 that is 3 minutes.