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OpenStudy (anonymous):
The desert temperature, H, oscillates daily between 38ºF at 6am and 78ºF at 6pm. Write a possible formula for H in terms of t, measured in hours from 6am. Use the form H = A cos(Bt) + C.
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OpenStudy (barrycarter):
Hint: what's H at t=0?
OpenStudy (anonymous):
38
OpenStudy (anonymous):
what letter is 38?
OpenStudy (barrycarter):
Well, it's not quite a letter, but if you substitute '0' in for t in the equation what do you get?
OpenStudy (anonymous):
ok, thanks
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