[填空题]
The Chicago Wheel, the world'u24vlhy3*-p6ua r 4yljco3w ds first +j5dh tkqruq )t3no;-Ferris wheel, was designed and built in 1893 by an American civil engin q3ott hr-n;u)+kdq5jeer, George W. G. Ferris Jr.
The height, in metres, above the ground of a passenger on the Chicago Wheel after
t minutes can be modelled by the function
h(t)=38cos($\frac{π}{10}(t−10))+42$.
1.Find the maximum height reached by a passenger on the Chicago Wheel.$h_{max}$ =
2.Find the height above the ground of a passenger 12 minutes after the ride has started. h ≈
3.Find the time, in minutes, it takes for the Chicago Wheel to complete one rotationrotation. t = min
4.Given that passengers only complete one rotation on the Chicago Wheel, calculate how long they are more than 6565 metres above the ground. t ≈ min
