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Use the Half-Angle Formulas
- sin⁡3π8\sin \frac { 3 \pi } { 8 }

Question 76

Multiple Choice

Use The Half-Angle Formulas
- sin⁡3π8\sin \frac { 3 \pi } { 8 }


A) 122+2\frac { 1 } { 2 } \sqrt { 2 + \sqrt { 2 } }
B) 122−2\frac { 1 } { 2 } \sqrt { 2 - \sqrt { 2 } }
C) −122+2- \frac { 1 } { 2 } \sqrt { 2 + \sqrt { 2 } }
D) −122−2- \frac { 1 } { 2 } \sqrt { 2 - \sqrt { 2 } }

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