Use an Identity to Write the Expression as a Single $$\sqrt { \frac { 1 + \cos 22 ^ { \circ } } { 2 } }$$

question 394

Multiple Choice

Use an identity to write the expression as a single trigonometric function or as a single number.
- $$\sqrt { \frac { 1 + \cos 22 ^ { \circ } } { 2 } }$$

• A) \(\cos 11 ^ { \circ }\)
• B) \(\tan 11 ^ { \circ }\)
• C) \(\sin 11 ^ { \circ }\)
• D) \(\cot 11 ^ { \circ }\)

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