PDA

View Full Version : Need Math Help. +rep



Ray-Chill
05-02-2012, 10:49 PM
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.

Zachafer
05-02-2012, 11:29 PM
All the work for this problem: [Only registered and activated users can see links]

Final answer:

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

To two decimal places:
x = 4.76 Hours