20. The current in a household appliance varies according to the equation A (t) = 5 sin(120πt), where t represents time, in seconds, and A represents the current, in amperes. At what rate is the current changing at 3 seconds? Show your work using the method taught in our MHF4U course.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.2: Trigonometric Equations
Problem 90E
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20. The current in a household appliance varies according to the equation A(t) = 5 sin(120ft), where t represents time, in
seconds, and A represents the current, in amperes. At what rate is the current changing at 3 seconds? Show your work using
the method taught in our MHF4U course.
Transcribed Image Text:20. The current in a household appliance varies according to the equation A(t) = 5 sin(120ft), where t represents time, in seconds, and A represents the current, in amperes. At what rate is the current changing at 3 seconds? Show your work using the method taught in our MHF4U course.
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