Use a Graph to Show Average Body Temperature over 24 Hours

You can use the graph of a trigonometry function to show temperature change over time. For example, the temperature of a person’s body fluctuates during the day instead of staying at a normal 98.6 degrees. And actually, not everyone has a “normal” temperature. Lots of people run either hot or cold.

The body temperature of a certain person over a 24-hour period.
The body temperature of a certain person over a 24-hour period.

If you’re one of the special people with a normal temperature, then your temperature goes up and down by about 1 degree each day. The formula T(x) = sin(x + 0.262) + 98.6 may be a model of your temperature during a 24-hour period. The variable x is the number of hours since midnight, so this function uses a 24-hour clock. The temperatures are given in degrees Fahrenheit. The graph is in radians, so you can enter the numbers for the hours. The preceding figure shows what a graph of the temperatures may look like, noting a few times and temperatures.

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