Use Identities to Write the Expression as a Single Function $$\theta$$

question 408

Multiple Choice

Use identities to write the expression as a single function of x or $$\theta$$
- $\sin \left( x + 45 ^ { \circ } \right)$

• A) \(- \cos x\)
• B) \(\frac { \sqrt { 2 } } { 2 } \cos x + \frac { \sqrt { 2 } } { 2 } \sin x\)
• C) \(\frac { \sqrt { 2 } } { 2 } \cos x - \frac { \sqrt { 2 } } { 2 } \sin x\)
• D) \(\sin x\)