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A pedal on a bicycle has an arm length of 20 cm and rotates about an axle 32 cm above the ground. If the pedal states at its lowest point and rotates at 20 revolutions every minute, find a sinusoidal function that will model the height h, in centimetres, of the pedal after t seconds. At what time during the first 5 seconds will the pedal be 40 cm above the ground?

A pedal on a bicycle has an arm length of 20 cm and rotates about an axle 32 cm above the ground. If the pedal states at its lowest point and rotates at 20 revolutions every minute, find a sinusoidal function that will model the height h, in centimetres, of the pedal after t seconds. At what time during the first 5 seconds will the pedal be 40 cm above the ground?

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter9: Solving Quadratic Functions
Section: Chapter Questions
Problem 12CT
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A pedal on a bicycle has an arm length of 20 cm and rotates about an axle 32 cm above the
ground. If the pedal states at its lowest point and rotates at 20 revolutions every minute, find a
sinusoidal function that will model the height h, in centimetres, of the pedal after t seconds. At
what time during the first 5 seconds will the pedal be 40 cm above the ground?
(ANS, t = 0.946s,2.043s,3.924s)

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