Use Identities to Find the Exact Value $$\cos \left( - \frac { 7 \pi } { 12 } \right)$$

question 150

Multiple Choice

Use Identities to find the exact value.
- $$\cos \left( - \frac { 7 \pi } { 12 } \right)$$

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