Fill in the Blank Using the Word Product, Sum, Quotient $\sin \alpha - \sin \beta = 2 \sin \frac { \alpha - \beta } { 2 } \cos \frac { \alpha + \beta } { 2 }$

question 48

Multiple Choice

Fill in the blank using the word product, sum, quotient, or difference.
-The formula $\sin \alpha - \sin \beta = 2 \sin \frac { \alpha - \beta } { 2 } \cos \frac { \alpha + \beta } { 2 }$ can be used to change aـــــــــــ of two sines into the ــــــــــــof a sine and a cosine expression.

• A) difference, product
• B) sum, product
• C) difference, quotient
• D) sum, quotient

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Definitions:

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