Use an Identity to Write the Expression as a Single $\sin 22.5 ^ { \circ } \cos 22.5 ^ { \circ }$

question 34

Multiple Choice

Use an identity to write the expression as a single trigonometric function or as a single number.
- $\sin 22.5 ^ { \circ } \cos 22.5 ^ { \circ }$

• A) \(\frac { \sqrt { 3 } } { 3 }\)
• B) \(\frac { \sqrt { 2 } } { 2 }\)
• C) \(\frac { \sqrt { 2 } } { 4 }\)
• D) \(\sqrt { 3 }\)

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