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Thread: Need Math Help. +rep

  1. #1
    Queen of Candy Land Ray-Chill's Avatar
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    Need Math Help. +rep

    I need to know how to solve this problem will rep.

    Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the temperature varies between 52 and 68 degrees during the day and the average daily temperature first occurs at 8 AM. How many hours after midnight, to two decimal places, does the temperature first reach 54 degrees?


    Thank you!
    =]

    If it helps I know how to get the first time. but I need the second one to subtract with.

  2. #2
    Little Brother


    Zachafer's Avatar
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    All the work for this problem: https://docs.google.com/open?id=0B0k...GZ1S2JFQ2hHTnM

    Final answer:

    x = 8 + 12*arcsin(-3/4) / pi Hours

    To two decimal places:
    x = 4.76 Hours
    Last edited by Zachafer; 05-03-2012 at 12:36 AM.

  3. The Following User Says Thank You to Zachafer For This Useful Post:

    Ray-Chill (05-03-2012)

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