Evaluate the Given Quantity, but Do Not Use a Calculator $\cos ^ { - 1 } \left( - \frac { 1 } { 2 } \right)$

question 10

Multiple Choice

Evaluate the given quantity, but do not use a calculator or table. $\cos ^ { - 1 } \left( - \frac { 1 } { 2 } \right)$

• A) π
• B) \(\frac { \pi } { 2 }\)
• C) 0
• D) \(\frac { \pi } { 3 }\)
• E) \(\frac { 2 \pi } { 3 }\)

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