Find the Exact Value of the Expression $$\cos ^ { - 1 } \left( - \frac { \sqrt { 2 } } { 2 } \right)$$

question 140

Multiple Choice

Find the exact value of the expression.
- $$\cos ^ { - 1 } \left( - \frac { \sqrt { 2 } } { 2 } \right)$$

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

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