Trigonometric Identities
Trigonometric Identities
Trigonometric Identities
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Example 6<br />
where V is the voltage and R is a constant that<br />
measure the resistance of the toaster in ohms.*<br />
Copyright © 2009 Pearson Addison-Wesley 1.1-17<br />
DETERMINING WATTAGE<br />
CONSUMPTION<br />
If a toaster is plugged into a common household<br />
outlet, the wattage consumed is not constant. Instead<br />
it varies at a high frequency according to the model<br />
Graph the wattage W consumed by a typical toaster<br />
with R = 15 and in the window<br />
[0, .05] by [–500, 2000]. How many oscillations are<br />
there?<br />
*(Source: Bell, D., Fundamentals of Electric Circuits, Fourth Edition,<br />
Prentice-Hall, 1988.)<br />
5.5-17
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