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Use a Sum or Difference Identity to Find the Exact $\sin \left( - 15 ^ { \circ } \right)$

Question 65

Multiple Choice

Use a sum or difference identity to find the exact value.
- $\sin \left( - 15 ^ { \circ } \right)$

A) $\frac { - \sqrt { 2 } - \sqrt { 6 } } { 4 }$
B) $\frac { \sqrt { 6 } - \sqrt { 2 } } { 4 }$
C) $\frac { \sqrt { 2 } + \sqrt { 6 } } { 4 }$
D) $\frac { \sqrt { 2 } - \sqrt { 6 } } { 4 }$

Use a Sum or Difference Identity to Find the Exact sin⁡(−15∘)\sin \left( - 15 ^ { \circ } \right)sin(−15∘)

Multiple Choice

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Use a Sum or Difference Identity to Find the Exact $\sin \left( - 15 ^ { \circ } \right)$

Correct Answer:
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