Subject : Trigonometry 4. The height a Ferris Wheel rider is above the ground can be modelled by the functionh(t) = -20 cos 15t+21, where h(t) is the height of the rider in metres, and t is the time inseconds (0 ≤t≤ 240). Consider a ride when t = 0 represents 2:00p.m. (when the ridestarts). 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 timewhen the height is 30 m.

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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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Question

Subject : Trigonometry

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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