Find the Exact Value of the Expression $\cos ^ { - 1 } \left( \cos \frac { 7 \pi } { 6 } \right)$

question 52

Multiple Choice

Find the exact value of the expression.
- $\cos ^ { - 1 } \left( \cos \frac { 7 \pi } { 6 } \right)$

• A) \(\frac { 4 \pi } { 5 }\)
• B) \(\frac { \pi } { 6 }\)
• C) \(\frac { \pi } { 3 }\)
• D) \(\frac { 5 \pi } { 6 }\)

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