Solved: In Exercises 8188, use the sum-to-product formulas to write the sum or
Chapter 6, Problem 87(choose chapter or problem)
In Exercises 81–88, use the sum-to-product formulas to write the sum or difference as a product.
\(\cos \left(\theta+\frac{\pi}{2}\right)-\cos \left(\theta-\frac{\pi}{2}\right)\)
Text Transcription:
cos(theta + pi/2) − cos(theta − pi/2)
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