4. The height a Ferris Wheel rider is above the ground can be modelled by the function h(t) = -20 cos 15 t+21, where h(t) is the height of the rider in metres, and it is the time in T seconds (Ost≤240). Consider a ride when t = 0 represents 2:00 p.m. (when the ride starts). Find the first three times when the height is 30 m above the ground.
4. The height a Ferris Wheel rider is above the ground can be modelled by the function h(t) = -20 cos 15 t+21, where h(t) is the height of the rider in metres, and it is the time in T seconds (Ost≤240). Consider a ride when t = 0 represents 2:00 p.m. (when the ride starts). Find the first three times when the height is 30 m above the ground.
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE:
1. Give the measures of the complement and the supplement of an angle measuring 35°.
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Subject : Trigonometry
Transcribed Image Text:4. The height a Ferris Wheel rider is above the ground can be modelled by the function
h(t) = -20 cos 15
t+21, where h(t) is the height of the rider in metres, and t is the time in
seconds (0 ≤t≤ 240). Consider a ride when t = 0 represents 2:00p.m. (when the ride
starts). Find the first three times when the height is 30 m above the ground.
5. Explain what (0 ≤ts 240) represents in question 4 and why there is more than one time
when the height is 30 m.
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