Trigonometric Identities
Trigonometric Identities
Trigonometric Identities
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Example 7<br />
Copyright © 2009 Pearson Addison-Wesley 1.1-23<br />
USING A PRODUCT-TO-SUM IDENTITY<br />
Write 4 cos 75° sin 25° as the sum or difference of<br />
two functions.<br />
5.5-23