Use Identities to find the exact value.
-$\cos \left( - \frac { 7 \pi } { 12 } \right)$
A) $\sqrt { 6 } + \sqrt { 2 }$
B) $\sqrt { 2 } - \sqrt { 6 }$
C) $\frac { \sqrt { 2 } - \sqrt { 6 } } { 4 }$
D) $\frac { \sqrt { 6 } - \sqrt { 2 } } { 4 }$

Question

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The Answer of Use Identities to find the exact value.
-$\cos \left( - \frac { 7 \pi } { 12 } \right)$
A) $\sqrt { 6 } + \sqrt { 2 }$
B) $\sqrt { 2 } - \sqrt { 6 }$
C) $\frac { \sqrt { 2 } - \sqrt { 6 } } { 4 }$
D) $\frac { \sqrt { 6 } - \sqrt { 2 } } { 4 }$

Use Identities to Find the Exact Value cos⁡(−7π12)\cos \left( - \frac { 7 \pi } { 12 } \right)cos(−127π​)

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