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Find the Exact Value by Using a Half-Angle Identity $\sin \frac { 7 \pi } { 8 }$

Question 217

Multiple Choice

Find the exact value by using a half-angle identity.
- $\sin \frac { 7 \pi } { 8 }$

A) $- \frac { 1 } { 2 } \sqrt { 1 - \sqrt { 2 } }$
B) $- \frac { 1 } { 2 } \sqrt { 2 - \sqrt { 2 } }$
C) $\frac { 1 } { 2 } \sqrt { 1 - \sqrt { 2 } }$
D) $\frac { 1 } { 2 } \sqrt { 2 - \sqrt { 2 } }$

Find the Exact Value by Using a Half-Angle Identity sin⁡7π8\sin \frac { 7 \pi } { 8 }sin87π​

Multiple Choice

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Find the Exact Value by Using a Half-Angle Identity $\sin \frac { 7 \pi } { 8 }$

Correct Answer:
Verified
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