In Exercises 7380, use the product-to-sum formulas to write the product as a sum or
Chapter 6, Problem 73(choose chapter or problem)
In Exercises 73–80, use the product-to-sum formulas to write the product as a sum or difference.
\(10 \cos 75^{\circ} \cos 15^{\circ}\)
Text Transcription:
10 cos 75 degrees cos 15 degrees
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