Use a Calculator to Evaluate $\cos ^ { - 1 } ( - 0.81 )$

question 295

Multiple Choice

Use a calculator to evaluate $\cos ^ { - 1 } ( - 0.81 )$ .Round your answer to two decimal places.

• A)0.68
• B) \(- 0.89\)
• C)0.72
• D) \(- 0.94\)
• E)2.51

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