A person who was listening to a siren reported that the frequency of the sound fluctuated with time, measured in seconds. The maximum frequency that was heard was 800 Hz and the minimum frequency was 240 Hz. The maximum frequency occurred at t = 0 and t = 8 seconds. The person also reported that, in those 8 seconds, the maximum frequency was heard 3 times (including the times at t = 0 and t= 8 seconds). (a) Write an equation of the cosine function that describes the frequency of the siren. (b) Use your equation to determine the irequency at 2.5 seconds. (c) Use your equation to determine all the times from 0 to 8 seconds that the frequency was 600 Hz.
A person who was listening to a siren reported that the frequency of the sound fluctuated with time, measured in seconds. The maximum frequency that was heard was 800 Hz and the minimum frequency was 240 Hz. The maximum frequency occurred at t = 0 and t = 8 seconds. The person also reported that, in those 8 seconds, the maximum frequency was heard 3 times (including the times at t = 0 and t= 8 seconds). (a) Write an equation of the cosine function that describes the frequency of the siren. (b) Use your equation to determine the irequency at 2.5 seconds. (c) Use your equation to determine all the times from 0 to 8 seconds that the frequency was 600 Hz.
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Transcribed Image Text:A person who was listening to a siren reported that the frequency of the
sound fluctuated with time, measured in seconds. The maximum
frequency that was heard was 800 Hz and the minimum frequency was
240 Hz. The maximum frequency occurred at t = 0 and t = 8 seconds. The
person also reported that, in those 8 seconds, the maximum frequency
was heard 3 times (including the times at t = 0 and t= 8 seconds).
Write an equation of the cosine function that describes the frequency of
the siren.
(a)
(b)
Use your equation to determine the irequency at 2.5 seconds.
(c)
Use your equation to determine all the times from 0 to 8 seconds that the
frequency was 600 Hz.
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