Use the Given Information to Find the Exact Value of the Expression

question 115

Multiple Choice

Use the given information to find the exact value of the expression.
- $\sin \alpha = \frac { 8 } { 17 } , \alpha$ lies in quadrant II, and $\cos \beta = \frac { 12 } { 13 } , \beta$ lies in quadrant I $\quad$ Find $\sin ( \alpha - \beta )$ .

• A) \(\frac { 171 } { 221 }\)
• B) \(\frac { 220 } { 221 }\)
• C) \(\frac { 140 } { 221 }\)
• D) \(\frac { 21 } { 221 }\)

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