Posted by **SC** on Tuesday, December 8, 2009 at 9:44pm.

The temperature in a certain cave is a sinusoidal function of time. When you first enter the cave, you set up a thermometer to record the temperature. After 19.5 hours, the temperature in the cave is at its maximum: 35 degrees celsius. The temperature then dropped, reaching the minimum temperature of 25 degrees Celesius in 36.5 hours after you entered the cave.

During the first 90 hours after you enter the cave, how much time will the temperature in the cave be above 31 degrees Celsius?

I need help finding the period and the phase shift:

sinusoidal model

T(t)=sin[2pi/B(x-C)]+D

D=(6+5)/2=11/2

A=(6-5)/2=0.5

B=period

C=phase shift

I need help finding B and C

## Answer this Question

## Related Questions

- Physics - A bat flying in a cave sends out a sound wave to navigate. If the cave...
- physics - Ideally, when a thermometer is used to measure the temperature of an ...
- physics - When an immersion glass thermometer is used to measure the temperature...
- engineering - A thermometer is used to measure the temperature of a gas flow ...
- math - The temperature in your house is controlled by a thermostat. The ...
- precalculus - Outside temperature over a day can be modelled as a sinusoidal ...
- Precalc - A corpse was discovered in a motel room at midnight and uts ...
- Pre-Calculus - A corpse was discovered in a motel room at midnight and uts ...
- CHEMISTRY - Here is what my lab was about: Properties of alcohols: First, I ...
- Calculus - a bottle of water with temperature 70 F is placed in a refrigerator ...

More Related Questions