Trigonometric Identities
Trigonometric Identities
Trigonometric Identities
SHOW LESS
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Example 6<br />
Copyright © 2009 Pearson Addison-Wesley 1.1-19<br />
APPLYING A PYTHAGOREAN IDENTITY<br />
TO RADIOS<br />
Tuners in radios select a radio station by adjusting<br />
the frequency. A tuner may contain an inductor L and<br />
a capacitor. The energy stored in the inductor at time<br />
t is given by<br />
and the energy in the capacitor is given by<br />
where f is the frequency of the radio station and k is a<br />
constant.<br />
5.2-19
Change language